I have a pretty solid average of 2-3 terabytes of download a month. My upload is between 4 and 10 terabytes a month.
I stream a lot of movies, youtube, etc. So does my roommate. I once had a sales rep in a different apartment say over the phone that I wouldn't need to worry about the data caps. I laughed and hung up. I'd rather have slower speeds with no cap than higher speeds with a cap. there's no point to having all that data if you spend the whole month worrying about hitting the data cap.
They really aren't that far off... https://robindev.substack.com/p/cloudflare-took-down-our-website