DeepMind was never a business (and never will be), it's an AI R&D toy for a trillion dollar tech company. It was always going to end up in the belly of a larger tech company, and the US has all the dominant tech companies outside of China.

Besides, it's fair game. The US had one of the two global leaders in AgTech in Monsanto, which was captured by the Germans. That repeatedly happens in biotech as a prominent example, most of the European biotech industry was built up on the back of acquiring US biotech companies.

Even ARM Holdings was originated heavily by US companies. There is hardly a piece of the global tech market that wasn't directly financed or made possible by the US tech industry and its mountain of profits and VC money, from SoftBank to China's tech companies to Shopify or Atlassian.

Captured? Enabled. DeepMind runs at big losses, only a company with enough firepower and vision such as the GAFAMs could (and luckily did) save DeepMind.