What does Plex do that Apple TV does not do?
I have read about Plex, and it looks fairly interesting. But, I don't understand why I would need Plex if my family and I are firmly ensconced in and happy with the Apple media infrastructure. Please let me explain:
I have several Apple TVs around the house on a Family Plan. All of us share movies, TV shows, music, podcasts, photos, etc. As far as I can tell, there are no holes or desired features that are not already in Apple TV, and none of us have any unfulfilled feature requests in Apple's world.
So, my question is, what, if anything, does Plex do that Apple TV, etc., does not already do? In other words, why would I need Plex (if I need it at all) if we're having zero problems sharing our media now?