The UK's competition regulator has launched an inquiry into Amazon's investment of over £3bn into an artificial intelligence (AI) startup as regulators ramp up their scrutiny of mergers involving the fast-growing technology.The deal, which was announced by Amazon in March, included a $4bn (£3.16bn) investment into Anthropic and a commitment from the AI startup to use Amazon Web Services as its "primary cloud provider" for essential functions, including safety research and the development of future foundatio ...