Reciprocal agreements aren't new, sometimes they're used to gain access to a market the other party already has established a foothold in for other industry segments. These companies operate in the same general industry: tech/internet so it could be complementary services they are each after.
So far both of these companies have shown they suck at support so we know that's not it. It could be that it might help Anthropic to leverage Gemini in their competition with OpenAI and Google will take compute commitments.
Anecdata: I'm finding a lot of my "type random question in URL/search bar" has decent top Gemini answers where I don't scroll to results unless I need to dive deeper.
Funny how Gemini generally takes into account all the words you type whereas Google search tends to ignore most words you type or otherwise direct you to results for thematically (or grammatically or semantically) similar words to what you searched but otherwise wholly irrelevant.
Google crippling search to bolster AI is a dangerous game. But without people going to competitors, what's the recourse?
I agree those results ate handy, but I had several occasions where they turned out to be completely wrong. 95% correctness rate is not good enough.