You could of course sue Google, but that's an extremely expensive and time-consuming option, rarely worth it for a mere consumer. Going to court certainly won't make your suspended account become unsuspended any quicker.
Nope. That gives players like Google a platform to negotiate from now and in the future, and it won't curb abuses long term. These abuses are a symptom of economic concentration and a lack of competitive markets. The only resolution guaranteed to work is to break up these companies down to smaller parts until they no longer act like quasi-governments.