Tell that to folks building on the paid maps API's.

I don't think AWS has every really screwed anyone. My simpleDB kept running long after I even remembered it used simpledb! I can't even remember a price increase, much less a 10X gotcha one with no grandfathering! Ouch!

Google will kill your account, change pricing etc much more commonly than AWS. The nightmare of google+ and being forced to jam a profile onto everything - they give two sh** about user stability / happiness on some things if the command comes down to blow the house up which it seems to periodically.