This isn’t rare and not altogether a bad idea.
My university had a problem of students bringing their own WiFi routers before the dorms had WiFi. Students would set them up incorrectly and cause a series of problems with colliding DHCP servers and interference and it would cause outages for nearby wired students.
A lot of IT departments locked the network down for these reasons.
The internet always moves on; the most popular bulletin boards and usenet groups and web forums eventually fell and people moved away. Even Digg had a powerful following and heavy user traffic and due to Reddit style changes everyone left too. Reddit just as likely.