Yep. Running servers is against Verizon's residential ToS. Regardless of how much BW the guy is using, he's breaking the rules.
"running a server" at one point was taken to mean, by Comcast, to have something listening on port 25, and would result in your connection being shut off. It's one thing to say someone is using too much bandwidth. It's another to say they're not allowed to do certain completely normal things with it.
It wasn't about bandwidth. Cloud backup software uses far more bandwidth than my piddly little web server ever did, but guess which one threw Comcast into a tizzy?
This is about controlling who produces versus who consumes, and Comcast wants you to consume.