There's that, but I also think some users are still a little spooked about the whole NSA scare, and are hesitant to give up trust to a company that could be forcefully controlled by the NSA or secret court rulings.

It's not Google's fault, but more the U.S. Government for being incapable to reign in control of certain organizations.

Personally I don't care - from a data perspective I'm know I'm not a special snowflake, but for others I can understand their stress.