Given the original purpose roughly of bring together geographically dispersed people who can actively follow each other's lives and stay friends with info gathe

Given the original purpose roughly of bring together geographically dispersed people who can actively follow each other's lives and stay friends with info gathered into a single feed, it was effectively feature complete 15 years ago. Every "improvement" made since then was either to deal with the larger scale or to increase engagement, neither of which improves the user experience. The mission expanded at some point to include being a content platform and marketplace, but it's not great at either of those things. Rather than improve in those areas, it could probably improve most as an application by just abandoning what it isn't good at and focusing on what it is good at. That would involve divesting, though, which might be good for investors overall, but not for Zuck specifically and he still has veto power.