Facebook is more than JUST Facebook. Look at their real estate holdings, and over 70 acquisitions in the VR and AI space. What’sApp has yet to monetize and is a huge international application that has yet to be utilized. Yes, their initial site is seen as outdated in America but you fail to account for the other 1.7 billion users it has in its database (the largest database in human history). Some countries have limited control over the internet and Facebook is what they define as the internet (not anything through a browser). It is not uncommon for a person outside of the US to buy a phone and the sales associate will install and set up a Facebook account for them. They are also the best and highest converting advertising platform in the world aside from Google. Lastly, any company that is worth over $500 billion is not going anywhere at least in the next 5 years.