> Isn't this useless?
No.
> They can serve Google NSL and the court can force the company to release the SSL keys for the encryptions - just like Lavabit.
They can't do that without Google knowing about it, knowing what data is covered by the NSL and having the opportunity to challenge the request, or to factor the fact of the requests and the extent of information covered by it in evaluating Google's lobbying priorities.
> Google CEO/Board can not shutdown the company like Lavabit.
Well, it could (or, at least, it could recommend that course of action to the shareholders), but its true that Google is differently situated than Lavabit -- specifically, Lavabit doesn't have ~$50 billion in cash it doesn't know what to do with that it could pull from for political action to address government policy that it felt severely threatened the way it prefers to do business, whereas Google does, which gives it options to address known actions by a government agency that it doesn't like.
> What can they do, get out of USA like how they got out of China?
Well, its too big of a market for that to be a good first choice, but its not impossible. Moving the headquarters, etc., would be easy, the hard part would be moving all their existing data centers and similar operations out of the US.
If they wanted to do that with minimal disruption, they'd either need to build duplicate datacenters somewhere else and switch operations to those -- or, for less duplication, build a fleet of transport vehicles that could hold data centers, and piece by piece transfer their existing US datacenters into those transports.