UK regulators probe Microsoft's Inflection AI talent grab

Microsoft thought it found a clever loophole in antitrust regulations by scooping up the brains behind Inflection AI without officially buying the company. UK regulators are not buying it.

The UK’s Competition and Markets Authority (CMA) has officially launched a phase one merger probe into Microsoft’s hiring of Inflection AI staff and their broader partnership. Regulators have set a firm deadline of September 11th to decide whether the investigation will escalate into an in-depth phase two review.

An acquisition disguised as a hiring spree

The move under scrutiny happened earlier this year when Mustafa Suleyman, cofounder of Google DeepMind and Inflection AI, left to lead Microsoft’s newly formed AI division as CEO. Alongside Suleyman, Microsoft poached the vast majority of Inflection’s technical workforce, leaving the startup as an empty shell.

Microsoft maintains it did nothing wrong. Company spokesperson Robin Koch stated that Microsoft is confident that the hiring of talent promotes competition and should not be treated as a merger. The company added that it will provide the CMA with the necessary information to resolve inquiries quickly.

Regulators across the UK and the EU are increasingly wary of Big Tech using partnerships and strategic hires to sidestep traditional merger controls. The CMA previously scrutinized Microsoft’s deal with French AI startup Mistral AI before deciding it did not warrant a full merger review. However, the Inflection AI probe signals a far more aggressive stance.

Microsoft knows how serious the CMA can be. During its $68.7 billion acquisition of Activision Blizzard, the UK regulator pushed the deal into phase two, ultimately forcing Microsoft to restructure its cloud gaming rights worldwide.

Why it matters

We think this investigation marks the beginning of the end for Big Tech’s favorite new playbook: the reverse-acqui-hire.

Over the past year, tech giants figured out that actually acquiring promising AI labs would instantly trigger antitrust red tape. Instead, they started buying software licenses and hiring entire founding teams en masse. It looks like an ordinary employment move on paper, but in practice, it eliminates an independent rival just as effectively as a buyout.

The CMA stepping in proves that regulators are catching up to these maneuvers. If this case moves into phase two in September, it could disrupt the momentum of Microsoft’s new AI unit under Suleyman and force concessions similar to what happened with Activision.

For the wider industry, this scrutiny changes the exit math for AI startups. Founders can no longer rely on quiet, backdoor exits to tech giants without inviting intense regulatory oversight.