More features == more complexity, likely a worse user experience, a huge maintenance overhead, and so much surface area for bugs. Not to mention the black hole that would swallow trucks of cash in terms of development time. Even simple, very purposeful apps are hard to design well. And so many of these features are insanely complicated, even if you don’t realize it. My Plex media library is currently 70TBs of movies and tv shows and it works flawlessly with about 15 active users. I’m very happy with that.