Helping fund Anthropic and assuring that there is visible competition also makes it more likely that LLM-backend-agnostic services will exist and a culture of evaluating offerings rather than just automatically going to OpenAI is established, which puts Google in a better position if they really are ahead in basic science and just suffering from a past lack of commeecialization focus that is remedied by the recent reorg and refocusing of Google’s AI efforts.
(Also, it may help avoid the situation where Google’s lack of product and and the financial relationship between other cloud providers and the AI vendors that have competitive product means that Azure is the favored enterprise platform for OpenAI, Amazon works out something similar with Anthropic, and Google Cloud loses competitive position because Google AI isn’t competitive and Google doesn't have the right partnerships.)