I never understand the constant railing about "lock-in" here. My company currently runs on AWS and GCE, and maybe will be using a 3rd in the future. We can move between any provider as long as we update our tooling to work with cloud provider specifics. IE security group differences between AWS and GCE, etc.
They aren't doing anything to block us from leaving, and anyone here thinking there is going to be some kind of 100% unified API between every cloud provider is out of touch with reality, if that is what their expectation of "no vendor lock-in" is.