Just based on my own experience with my wife and kids, it’s the whole “you can lead a horse to water, but you can’t make him drink” thing. While I have services running for photo & file storage, books, music, and video (plus a Proton family plan and several other services), the only thing my family uses is Jellyfin.

I’ve mostly given up now. I keep everything up because I use it all and love working on it. Maybe one day they’ll express some concern with privacy or ownership, and then I can pounce. But people need to be ready to move.