I really hope that some portions are turned into public institutions (either directly or in the weird way organizations like USPS is) in some way. They've made themselves so deeply ingrained and essential to using the internet as loss leaders in some areas that it's impossible to imagine those services standing on their own and still making sense. That's what's responsible for their monopolization, and natural monopo…
Wikipedia, archive.org are two examples of non-Google projects that come to mind when I think of internet "public-good". They seem to be doing fine without advertising dollars (although perhaps they are only hobbling along, I don't know — but I would rather they get "public institution" treatment before Google franchises).