A £1,100 annual Microsoft subscription held by a small parish council in North Yorkshire has become an unlikely Exhibit A in a national competition probe, illustrating how artificial intelligence features are deepening vendor lock-in far beyond what regulators initially feared. Killinghall Parish Council adopted Microsoft Teams to keep meetings running during the pandemic, only to discover that full calendaring and collaboration capabilities required the entire Microsoft 365 bundle—and now, with Copilot AI weaving itself into that stack, the council’s predicament mirrors a systemic challenge facing thousands of organisations.
The council’s story, first reported by The Register, epitomises the hidden hooks that Microsoft’s integrated suite embeds in public sector procurement. For roughly £3.80 per user per month, the 20-person council unlocked Teams, but its members quickly realised that scheduling a meeting in Outlook, sharing files via SharePoint, and even authenticating users demanded the wider ecosystem. Attempts to swap out individual services for cheaper alternatives like Zoom or Google Workspace foundered on deep data interdependencies and retraining costs. “We wanted Teams for video; we ended up buying a whole digital office we didn’t know we needed,” one parish clerk reportedly told the council, according to meeting minutes cited by The Register.
This experience, replicated in councils, schools, and SMEs across Britain, has caught the attention of the Competition and Markets Authority. The CMA launched a market investigation into cloud services in October 2023, zeroing in on software licensing practices that inhibit switching. While the probe initially targeted Azure’s dominance and alleged unfair licensing around Bring Your Own License (BYOL) programs, the inquiry has broadened to encompass how ancillary services—and increasingly, AI capabilities—create de facto lock-in.
AI as the New Glue in Microsoft’s Ecosystem
The integration of AI into everyday productivity tools marks a qualitative leap in lock-in dynamics. Microsoft Copilot, now deeply woven into Teams, Word, Excel, and Outlook, is not a standalone product but a pervasive feature that learns from an organization’s data, emails, and meeting transcripts. For Killinghall’s councillors, once they begin relying on Copilot to summarize missed meetings, draft responses, or generate budget reports, migrating away from Microsoft 365 becomes untenable without losing all that accrued business intelligence. The AI models themselves are trained on proprietary data structures—a unique fabric that competitors cannot replicate.
This “cognitive lock-in” is far stickier than traditional file-format compatibility. While it is technically possible to export an .xlsx spreadsheet to Google Sheets, there is no equivalent export for the Copilot interaction history, nor for the AI-generated context that now underpins daily decision-making. Microsoft has announced that Copilot operates within the Microsoft Graph, a unified API that maps all relationships between users, content, and activity. Once an organization’s graph is populated, it becomes the company’s digital nervous system, and ripping it out would paralyse workflows.
The timing is significant. Microsoft began rolling out Copilot for Microsoft 365 to enterprise customers in November 2023, just as the CMA’s inquiry was getting underway. The base price of $30 per user per month almost doubles the cost of a standard E5 license, but early adopters quickly realise that the value multiplies with each integrated app. For a cash-strapped parish council, the lure of AI might seem distant, yet the features are trickling down: Copilot summaries have appeared in Teams Premium, and AI-powered noise suppression and recaps are already part of the standard Teams experience, blurring the line between basic and premium.
How Licensing Architecture Funnels Users into AI Dependence
Microsoft’s licensing architecture perpetuates this AI creep. The new Copilot add-on is licensed per user and requires a base subscription to Microsoft 365 E3, E5, Business Standard, or Business Premium. If Killinghall had attempted to pare back to a cheaper plan—say, from Business Standard to Business Basic—they would lose access to the desktop apps, but they’d also lose the ability to install the Copilot add-on. The tiers are crafted to push organisations into ever-higher commitments.
Worse, many public sector bodies enter into Enterprise Agreements that are renegotiated every three years, locking them into a full suite for the term. The CMA has already signalled concerns about Microsoft’s practice of offering discounts to customers who commit to entire platforms, effectively pricing individual components out of the market. According to Ofcom’s 2023 cloud services market study, which prompted the CMA referral, Microsoft and Amazon Web Services together hold a 70–80% share of the UK cloud market, and bundling of productivity software with cloud infrastructure was a key factor in switching barriers.
Killinghall’s £1,100 bill is modest, but extrapolate that across the 10,000 parish and town councils in England and Wales, and the annual cost balloons to £11 million—enough to fund significant local services. Many of these councils would struggle to articulate the exact value of each component because they never evaluated them independently. That opacity is the hallmark of software bundling, and AI integration only deepens the fog.
The CMA Case and the Spectre of Structural Remedies
The CMA’s cloud services market investigation is expected to publish its final report by April 2025. While the probe’s core focuses on data egress fees, interoperability, and licensing practices, the emergence of AI as a lock-in accelerator may push the authority to consider structural remedies. These could range from mandated unbundling of Teams and AI features from the core office suite to requiring Microsoft to offer AI capabilities as standalone modules that work with third-party platforms.
One precedent is the European Commission’s 2004 ruling that forced Microsoft to unbundle Windows Media Player and share interface protocols—a decision that, while late to market impact, established the principle that tying of applications to an operating system can constitute an abuse of dominance. Today’s tying is not OS-based but ecosystem-based: Teams is tied to Outlook, which is tied to Exchange, which is tied to Entra ID (formerly Azure AD), with Copilot tying them all together through the Graph. Untangling this would require Microsoft to publish APIs that allow competitors like Zoom, Slack, or Google Workspace to access the same graph data and AI context—a move Microsoft is unlikely to volunteer.
The CMA has already demonstrated willingness to act decisively against big tech. Its interventions in the Meta/Giphy deal and the initial block of Microsoft’s Activision Blizzard acquisition show a regulator unafraid to challenge the status quo. Moreover, the Digital Markets, Competition and Consumers Act 2024, which received Royal Assent in May 2024, grants the CMA new powers to designate firms with “strategic market status” and impose pro-competitive interventions. Microsoft, with its entrenched position in productivity software and cloud, is a prime candidate for such designation.
Impact on Windows Users and the IT Landscape
For the Windows enthusiast community, this news sits at the intersection of several trends. Copilot is becoming a system-level experience in Windows 11, with a dedicated hardware key on new keyboards and deep integration into the taskbar. The AI assistant technically requires an internet connection and a Microsoft account, tying the local PC ever more tightly to the company’s cloud. While users can disable Copilot, the long-term trajectory suggests that AI features will become inescapable—perhaps even mandatory for certain updates, much like how Microsoft forced Edge and Bing onto Windows users in the past.
Power users who have long valued Windows for its flexibility and backwards compatibility may soon face a dilemma: adopt the AI ecosystem to stay productive and secure, or attempt to strip it out and risk compatibility gaps. The Killinghall case is a microcosm of that choice, scaled to an organisation that lacks the technical know-how to perform such stripping. If the council cannot decouple Teams from Exchange, how can a large enterprise decouple Copilot from its security information and event management (SIEM) tool, or from its customer relationship management (CRM) system?
The answer is: not easily. And Microsoft is investing billions in making Copilot the default interface for work. At Build 2024, the company announced Copilot extensions that allow the assistant to act on data from third-party apps like Jira or ServiceNow—but only within the Microsoft 365 environment. While that sounds like openness, it actually reinforces the Copilot hub as the central point of integration, making it harder to replace it with a competitor without losing connectivity to those third-party tools.
What the Parish Council Teaches Us About Procurement
Killinghall Parish Council’s experience also highlights a chronic weakness in public sector IT procurement: the absence of skilled technical evaluation. The council’s members, many of whom are part-time volunteers, turned to a familiar brand and ended up in a package they couldn’t exit. This mirrors the experience of larger public bodies that sign long-term Enterprise Agreements under the guise of simplification, only to find themselves locked into annual price increases and proprietary stacks.
There is a flicker of hope on the horizon. The UK government’s One Government Cloud Strategy encourages departments to adopt multi-cloud and avoid single-supplier lock-in, but in practice, the productivity tools layer remains stubbornly Microsoft-centric. The Central Digital and Data Office has promoted a “buy what you use” model, yet few departments have the commercial leverage to insist on unbundled pricing from a dominant supplier.
AI could be the catalyst that forces change. If regulators conclude that AI integration constitutes a new form of unfair tying, they could compel Microsoft to offer Copilot as a standalone service compatible with Google Workspace or open-source alternatives like Nextcloud. The technology to do so exists—language models are increasingly commoditised—but the business incentives point in the opposite direction.
Microsoft’s Stance and the Industry’s Response
Microsoft has consistently argued that its bundling benefits customers through lower total cost of ownership and seamless integration. In its response to the CMA’s issues statement, the company pointed out that customers can choose to use Teams without the rest of the suite, but acknowledges that the “most optimal experience” comes with the full stack. That phrase—optimal experience—is the crux: it’s the same argument that convinced Killinghall to upgrade from a standalone video tool to the full Microsoft 365.
Competitors are not sitting idle. Zoom has added AI-powered meeting summaries and a collaborative workspace called Zoom Docs, while Google continues to enhance its Gemini AI across Workspace, offering a rival suite with a different (and non-proprietary) graph built on web activity. However, neither has the same depth of legacy enterprise integration, nor do they offer a consumer operating system like Windows to act as a funnel.
For Windows users, the unfolding CMA case may not lead to immediate changes, but it could slow Microsoft’s ambition to make Copilot the irreplaceable centre of computing. If the CMA demands, for example, that all Copilot data be exportable in a machine-readable format and that third-party AI agents can plug into the Microsoft Graph on equal terms, it would create a more level playing field—and give users like those at Killinghall a genuine off-ramp.
The Road Ahead
As the CMA’s market investigation approaches its conclusion, the Killinghall story will likely resurface as a vivid illustration of how small customers are caught in the gears of big tech’s bundling machinery. The £1,100 bill is not the scandal; the scandal is that the council never had a realistic choice once they took the first step. And with AI layering itself over every spreadsheet and video call, the next time a parish council asks for a simple video conferencing tool, they may find themselves buying into a future they cannot escape.