"direct competition with a corporation like Facebook or Google is virtually impossible..." Even if that's true, it doesn't follow that those corporations MUST

"direct competition with a corporation like Facebook or Google is virtually impossible..." Even if that's true, it doesn't follow that those corporations MUST do what we want. I can't realistically build my own car, but it doesn't follow that Toyota has to build the kind of car I'd like to build. They'll do it if, and only if, there is enough market incentive to do so. "and even the choice of opting out is becoming impossible; e.g. Spotify won't be the last company to require a Facebook for access to their services." So? I have quit Facebook. If Spotify doesn't want to bother to give me a way to sign in, I won't bother to sign in. See? Opting out is easy. Either someone will offer me a service at a tradeoff I can accept, or they won't get my business.