Spectrum had a policy like this at one point. They’d shut you off after a couple of instances of p2p that were reported. Afterwards, they directed you into a captive portal with some plausible deniability where you had to say “I don’t know what happened, but it won’t happen again”.

Nowadays they just send you an email but don’t restrict access.

Either way the Internet isn’t too safe, protect yourself with at least a VPN.