My understanding of all these GAE pricing story is that Google decided that GAE is not a strategic business and that business unit need to break even or they will be canceled. Does this make sense?
If that were the case, wouldn't apps like google calendar get cancelled long time ago? I doubt the ads on google calendar are sufficient to sustain the number of users it has on a daily basis.
Maybe Google Apps (Calendar) are part of strategic vision (connected with Chrome OS)?
Nope, Google doesn't work that way. No business units get P&L's, it's part of their overall financial strategy.