Quick; I want you to imagine the makers of smart phone or console that refused to have Netflix on it. Wait, or maybe they decide they don't want any Facebook technology on it. Or maybe, just maybe they don't want anything to do with that whole "Twitter thing."
Can you see it? Nope, neither can I. And why can't I see it? Because Netflix, Facebook, Twitter, Google, and other companies have made themselves more or less indispensable to large customer bases. They're not going anywhere, they've learned from the mistakes of their predecessors (such as Facebook learned from MySpace and Netflix learn from,well, everybody), understand that they can make up the infrastructure of people's lives.