I think Linkedin has the long tail advantage here in that since it was setup as a professional network, it tends to stay that way in regards to typical interact

I think Linkedin has the long tail advantage here in that since it was setup as a professional network, it tends to stay that way in regards to typical interactions and people will continue to build their network on Linkedin over their career. Additionally, Linkedin has the benefit that younger people will signup to CONNECT WITH OLDER PEOPLE as networking with those senior people might help them in their career. Facebook suffers from people assuming "hidden landmines" could exist from something they posted or wrote when they were in college, which disincentives someone to maintain and enhance new social or professional connections. So it is interesting to think about what happens when you lose young users, while simultaneously you have mature users no longer keeping their social network up-to-date on Facebook? A long time ago (in tech years), it seemed like part of Facebook's moat was that the switching costs would be high on a social network. Is this still the case? Would a reasonable analogy be what if Netflix stopped creating new content and expected continued viewership relying on only existing content? How long of a lead/lad would there be until a large drop in viewership? Facebook does owns Whatsapp and Instagram though, which provides an argument that the company is well positioned from the prospective of offering the platform for targeting group chats, and still being the epicenter of most people's social experience.