The obnoxious part about all of this is that smaller cable ISPs have been doing this for years so now Comcast has someone to point to and say "why didn't anyone object when these companies did it?" Mediacom has a 250GB rigorously-enforced cap with very high overage rates.

Heck, smack in the middle of Seattle is a cable ISP called Wave Broadband. They have 100GB-1000GB usage tiers and even actively market that "more gigs can be proactively purchased each month." (But at least they bought out CondoInternet so the high-rise dwellers and houseboats in Eastlake can have no-quota gigabit fiber service.)