AFAIK the balance they try to keep is that users of non-free OSs should not have a better experience than those of free OSs. That doesn't mean they will cripple

AFAIK the balance they try to keep is that users of non-free OSs should not have a better experience than those of free OSs. That doesn't mean they will cripple the experience on non-free OSs, but they won't implement features not implementable, say, on linux nor specifically optimize for non-free OSs.