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Honestly I've always gotten good support for Google products, either from friends at Google or through forums, since they are popular enough to have lots of users. Of course, I remember when Google was basically the only hiring destination for top people in the valley (2001-2004 or so), and I only narrowly avoided going to google myself.
I suspect they will do a decent job of supporting GCE, either through a premium offering themselves, or through third party developers -- same thing AWS has done. I had some meetings with AWS application/security platform consultants recently, and they do a really good job of it, you just have to pay for it.
This isn't a good argument for consumer products (if a random grandmother gets locked out of her gmail, and doesn't know anyone, she may be doomed), but I suspect any developer building products on GCE either knows someone or can pay for support, or can bitch in a high visibility forum and get help from third parties or by Google.
