

Windows can boot and still be fucked. User can login and still be fucked.
Explorer crash and respawn loop. Taskbar not responding. Windows failing to update and still hogging every reboot. Networking settings get fucked up.
Also booting and even logging in does not mean a person can actually use his computer for his purposes. OneDrive deleting your work files from your laptop can fuck up a guy on the go.
Of course these people are not part of a bigger organization that managed their machines, just like OP’s mom. If anything I would say your experiences in IT out you out of touch with most PC and even Windows users.
What do you mean by chat? Because IRC has never been p2p. What existed as p2p 20 years ago and doesn’t today? I think they are all still here. It’s users that turned elsewhere but the p2p networks are still alive and well.