OpenAI drama prompts CMA review into Microsoft relationship
The CMA will examine whether Microsoft and OpenAI’s relationship could be considered a merger
Rory Bathgate
Sign up today and you will receive a free copy of our Future Focus 2025 report - the leading guidance on AI, cybersecurity and other IT challenges as per 700+ senior executives
You are now subscribed
Your newsletter sign-up was successful
An initial review into the relationship between OpenAI and Microsoft has been announced by the UK's competition watchdog amid concerns the duo could be impacting competition in the UK AI market.
The Competition and Markets Authority (CMA) said it intends to examine whether Microsoft’s significant investment in the firm amounts to an “acquisition of control”, or a merger.
Sorcha O'Carroll, senior director for mergers at the CMA said this initial review will see the watchdog seek comment from both parties. This phase of the investigation could determine whether a full competition probe is conducted, O’Carroll added.
Microsoft is a major backer of OpenAI, the company behind ChatGPT. The US tech giant has invested over $10 billion in the firm so far, and owns roughly 49% of the company.
OpenAI controversy played a role in CMA decision
OpenAI was rocked by controversy in late November after a shock boardroom coup resulted in CEO Sam Altman’s ousting from the firm.
Days of chaos followed the incident, which saw Altman co-founder Greg Brockman join Microsoft to lead a new AI research team before being re-appointed within a matter of dats.
The duo’s return to OpenAI was partly due to a company revolt that saw staff demand their immediate return.
Sign up today and you will receive a free copy of our Future Focus 2025 report - the leading guidance on AI, cybersecurity and other IT challenges as per 700+ senior executives
This period of chaos appears to have played a role in the CMA’s decision to launch an investigation. The watchdog said recent developments in the company’s governance and leadership structure influenced its decision.
“There have recently been a number of developments in the governance of OpenAI, some of which involved Microsoft,” the CMA said in a statement.
“In light of these developments, the CMA is now issuing an ITC to determine whether the Microsoft / OpenAI partnership, including recent developments, has resulted in a relevant merger situation and, if so, the potential impact on competition.”
Alex Haffner, competition partner at UK law firm Fladgate said the announcement points toward wider concerns over AI regulation and competition in this rapidly burgeoning market.
RELATED RESOURCE
Get an informed overview of what to consider when executing GenA
DOWNLOAD NOW
“Today’s announcement by the CMA that it is considering whether to investigate the Microsoft/Open AI partnership under its merger control powers is particularly interesting given wider concerns about the regulation of AI,” he said.
“In order to move forward with any investigation, the CMA will need to find evidence that the recent fall-out from the Sam Altman affair has led to material changes in the governance of Open AI and, more specifically, Microsoft’s influence over its affairs.”
Is the relationship between OpenAI and Microsoft too close?
Microsoft has been betting on OpenAI for several years, having first built an Azure-based supercomputer for the firm in 2020 and now having backed the startup with significant investment.
OpenAI’s models have become a cornerstone of Microsoft’s AI-assisted product range, with the industry-leading GPT-4 forming a large part of the backend for Microsoft Copilot, though Microsoft has not disclosed the exact extent to which it relies on the model.

Rory Bathgate is Features and Multimedia Editor at ITPro, overseeing all in-depth content and case studies. He can also be found co-hosting the ITPro Podcast with Jane McCallion, swapping a keyboard for a microphone to discuss the latest learnings with thought leaders from across the tech sector.
The CMA’s investigation will hinge on whether the recent upheaval at OpenAI, as the return of Sam Altman and simultaneous rearranging of OpenAI’s board saw Microsoft obtain a non-voting observer seat on the board.
Although OpenAI’s structure prevents Microsoft from leveraging further control via this route and the firm has not named who will take up its observer seat, the CMA could interpret the reshuffle as a power grab that has given Microsoft undue sway over the firm.
The regulator has held off with intervention in the space to now, with its initial report on foundation models (FMs) having compared Microsoft’s significant investment in OpenAI to the funds raised by Amazon and Google-backed startup Anthropic and made no firm judgements on the potential impacts of these investments on smaller firms in the AI space.

Ross Kelly is ITPro's News & Analysis Editor, responsible for leading the brand's news output and in-depth reporting on the latest stories from across the business technology landscape. Ross was previously a Staff Writer, during which time he developed a keen interest in cyber security, business leadership, and emerging technologies.
He graduated from Edinburgh Napier University in 2016 with a BA (Hons) in Journalism, and joined ITPro in 2022 after four years working in technology conference research.
For news pitches, you can contact Ross at ross.kelly@futurenet.com, or on Twitter and LinkedIn.
- Rory BathgateFeatures and Multimedia Editor
-
Trump makes AI firms pay for powerNews Agreement with Big Tech and AI giants at the White House designed to keep electricity prices from increasing
-
Law enforcement and security firms take down huge PhaaS platformNews Tycoon 2FA has been responsible for tens of millions of phishing messages, reaching over 500,000 organizations each month worldwide
-
Why Amazon’s ‘go build it’ AI strategy aligns with OpenAI’s big enterprise pushNews OpenAI and Amazon are both vying to offer customers DIY-style AI development services
-
February rundown: SaaS-pocalypse now?ITPro Podcast Geopolitical uncertainty is intensifying public and private sector focus on true sovereign workloads
-
‘A huge vote of confidence’: London set to host OpenAI's largest research hub outside USNews OpenAI wants to capitalize on the UK’s “world-class” talent in areas such as machine learning
-
Sam Altman just said what everyone is thinking about AI layoffsNews AI layoff claims are overblown and increasingly used as an excuse for “traditional drivers” when implementing job cuts
-
Microsoft Copilot bug saw AI snoop on confidential emails — after it was told not toNews The Copilot bug meant an AI summarizing tool accessed messages in the Sent and Draft folders, dodging policy rules
-
OpenAI's Codex app is now available on macOS – and it’s free for some ChatGPT users for a limited timeNews OpenAI has rolled out the macOS app to help developers make more use of Codex in their work
-
Amazon’s rumored OpenAI investment points to a “lack of confidence” in Nova model rangeNews The hyperscaler is among a number of firms targeting investment in the company
-
OpenAI admits 'losing access to GPT‑4o will feel frustrating' for users – the company is pushing ahead with retirement plans anwayNews OpenAI has confirmed plans to retire its popular GPT-4o model in February, citing increased uptake of its newer GPT-5 model range.