1. A lot of people have no clue as to the legal process
2. It pays REALLY well to have external backups
3. It might be a good idea to use encrypted volumes to store sensitive data, so if authorities are involved, they have to serve you with papers to get your decryption keys. This way you stay more informed.
4. Your hosting provider probably has a clause in their ToS that more or less says "we can terminate your service whenever, the hell, we want and there is nothing you can do about it". Deal with it.
5. This story still sucks.
6. Seems like this guy was simply small enough to just serve a court order and shut down his service. I don't think anyone would shutdown Google for questionable content on a blogger account or google web pages.
7. I am pretty sure, that there is no legal way for a law enforcement agency to remain anonymous while doing something like this. Either I am wrong about it or something is amiss.