Microsoft may make a lot of money from chatgpt, but that doesn't mean they will topple google in search. Being able to democratize model training so that an enterprise could run gpt like tooling on their own internal data with no privacy concerns would be exceptionally valuable to a lot of enterprise and govt customers.

If they add 5% to bing, that is a fantastic side effect, but i dont know that Microsoft care about that as much as the pundits think they do. Enterprise gpt as a service and copilot powered software development would be world changing enough.