[higherpurpose]

This is exactly why Google should be researching fully homomorphic encryption like crazy, yet I haven't heard anything about them ever considering researching it. I think at the very least FHE is a slightly more practical research area than say researching quantum computers, and could have a bigger positive impact on Google's cloud business in the near future.

[fhoffa]

Homomorphic encryption available on Google BigQuery, if you need: https://code.google.com/p/encrypted-bigquery-client/

For others, strong certifications of privacy are enough, HIPAA among others: https://support.google.com/work/answer/6056694