The thing people "forget" is that the further up the stack you move, the more support is required because there's less and less the customer can do to diagnose a problem.
Google should get it, in that they need to offer support if they want to run this kind of business. But customers should also know that Google doesn't do support, and they will need support, so GAE is probably not a good fit.
If that's right, I agree as well.