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.
Why not both?
A consumer bill of rights and breaking up Google are not mutually exclusive. Consumer protection laws protect consumers from all companies big and small, present and future. Breaking up Google won't do anything about the "next Google".
It's a bit strange to think that antitrust is a long-term solution when the successful antitrust case against Microsoft didn't prevent Google, Facebook, and Apple from arising.