[krapp]

>When they are the de facto form of communication for a significant percentage of the population, it starts to go from "their rules" territory to "society's rules".

Facebook is nowhere near the de facto form of communication for a significant percentage of the population, as evidenced by the fact that the world didn't crash to a halt when it went down a few days ago. It's merely popular, but being popular doesn't mean it controls society or dictates its rules.

>Can you imagine being cut off from the phone system 40 years ago because you were selling answering machines?

That would be a valid comparison of Facebook owned the infrastructure of the internet, but they don't. It's trivially easy to communicate without Facebook.