Facebook is thriving? Based on what? Yeah it's growing internationally; which of course helps to sustain it, and cover up for the fact that it's userbase here in the west is severely dwindling. In fact Facebook's been in the decline for the last year. They can't keep the youth, and the younger Millennials and Gen Z's are not gravitating to it. Facebook's UI hasn't even changed since 2012. Facebook is mostly used by businesses, and business owners given they can market to people internationally; however even that's now becoming jeopardized as Facebook is now beginning to go through, and delete business pages. Youtube actually allows people to monetize their content, and market successfully through their platform. Youtube also allows people to set up networks, and connect through sponsors to generate more earning potential. Facebook has done none of that.