The question is not “is Google better or worse than average?” It’s: what is the risk of building an app on a Google API? The risk is high, and it’s not worth it. Their track record is abysmal. Sure, if you pick a random provider out of a hat, maybe Google is better. But if you look for a solid provider or better just build your own service instead of trying to glom onto someone else’s (someone with no real incentive to see your product succeed).
Does Google shut down stuff at a greater rate relative to anyone else? Are the odds better or worse if X had been run by company Y?