> Sure Amazon or any cloud provider could build a back door, but that will eventually be discovered whether by hacker or whistleblower and their reputation will be forever ruined and they'll lose all corporate and government business forever. It's not in Amazon's corporate self-interest to allow a back door like that.

In which alternate reality is that? This already happened with Snowden's leaks when we learned about Microsoft's, Apple's, and Google's participation in the PRISM program and their market dominance has only grown since then. There were no consequences, the market didn't care, the shareholders didn't care, their customers largely didn't care, and they didn't lose any sleep over it.