On (2), I think what the case said is that Microsoft would have had to pay more because it's smaller? But I'm not as sure here.
Given that, why wouldn't Google negotiate a lower rev share?
Consider this from Apple's Eddie Cue: "Cue implied that Bing’s technology was inferior to Google’s, saying that he doesn’t 'know what we would have done” if negotiations with Google ever fell apart.' " [1]
If I were sitting across from Cue at the negotiating table and knew he felt that way I certainly would be looking at a lower rev share and saving some billions of profit for Google...
[1] https://www.bloomberg.com/news/articles/2023-09-28/microsoft...
Via https://finance.yahoo.com/news/microsoft-considered-investin...
> Because Bing was far smaller than Google, Microsoft would have had to offer Apple a far larger percentage of the revenue than Google and would have lost money on the deal, at least initially, Tinter said.