I think this is actually an argument for open protocols. If Google put this clause in the terms of service for Gmail, you could switch to Yahoo! Mail, or you could switch to Fastmail.fm, or whatever else. But when it's a proprietary social network, you can't switch (in practice), because all your friends and followees are on Instagram - not the other thing that you switch to.<p>When services interoperate using open, decentralized protocols, competitive pressure helps keep a lot of the ugly stuff out of their Terms of Service. We all win. But with Instagram, or Twitter, or Facebook, one company has a complete monopoly on a particular combination of (functionality + approximation of social graph). Competition is locked out, and only regulation can prevent the company from doing whatever they want.