Keepassxc has zero collaborative features and no online sync. I’m a big fan of keepassxc but these reasons are why I pay for 1P. I can add colleagues, guests, family members and have it run on all my devices.
KeepassXC does have collaborative features and online sync if you just drop the Keepass file in a shared cloud - I use it this way and it's easy to set up. Also, more importantly, the password database is not stored in some server God knows where.
Well..
This is why we use it! Also, it's free. Paying subs for software feels dirty.