Pretty sure normies don't even know what an IP address is.

Wasn't really static IP, but upload caps and bandwidth limits. And "updated Terms of Service." To your point, they started charging for static IPs or just not offering them for "home" service. In the early days (feeling old yet), self hosting wasn't shut down so much as shared hosting from home. People were running shared web and email hosts from home and ISPs didn't like that added cost and competition, mostly cost. Bandwidth was expensive going over copper exchanges.

They never gave people static IPs by default in general. Done did if you were lucky but most didn't. (In the UK at least.) Hence the existence of things like dyndns.