Well my team and I have been working on AppScale for the past 3-4 years to do away with the lock-in for GAE. They iterate pretty fast on their platform, so we're always playing catch up. Eucalyptus and AWS did recently partner, so AWS has come around to supporting other implementations of their API. The EC2 API getting further reach is a good thing in my opinion for AWS even if they aren't directly making money off of it. Google has been cognizant of this from the beginning and hence why they helped fund AppScale.