Facebook’s dominance is built on anti-competitive behavior
I think the very unhealthy dominance of Facebook will only start to properly recede when countries outside the USA start to block its use. This is a highly predatory company that takes away sovereignty in each nation's cyberspace and it really only makes sense for foreign countries to block it and either let their own national corporate replacements emerge (as China has done) or foster the use of open social networks and protocols (my strong preference).This doesn't solve the problem for people in the USA of course (well, other nations fostering open social networks will help some). The USA obviously needs to look at antitrust measures to fix the issue at home. But other countries can't afford to wait for that to happen.