I must contradict this. Virgin Media (a large UK ISP), as well as other service providers, see running a web server on a residential Internet connection a violation of the Terms of Service.

(Unless I misunderstood your point.)

https://old.reddit.com/r/selfhosted/comments/8cfwmi/any_uk_p...

Source? I've never heard of this in the US or in other countries I've been in, although I wouldn't doubt it's the case somewhere.

Every major ISP I've used has disallowed hosting websites since about 2002 or so when Comcast, my provider at the time, changed their policy.