What puts me off of Owncloud is the new ownership. I couldn't care less if it's written in the blood of Christ, if I have to worry about the rug getting pulled out from under me for self-hosting, it's a no-go for me, Joe.
Nextcloud works well for me and has for years. The people that don't like it can go use this, and we'll see you back in a couple of years when it goes open-core or worse.