This! I am quite sure that most projects, in exchange for some negligible part of Google's money, would be more than happy to offer the software under a different license. My guess is that it's the difficulty of ensuring that the new license terms are not breached (the license would need to be checked by lawyers, approved,...) that is the real deal breaker.

Not that I sympathise with Google here, they can afford to give something back to FOSS (not just when it advances their agenda).