One can also forbid Internet or just computers, because one can do a lot of harm with them...
Which mess did it cause?
Enterprise-IT people tend to shutdown first and ask questions later, to cover their ass (and in their shoes I'd probably do the same). If it becomes trivial to torrent via mainstream browsers, I expect they will lock down whichever feature is responsible or apply massive pressure on vendors to remove the feature.
You can't really forbid SSH (on paper only you can) since you can create SSH tunnels via virtually any port.
Worst case we could disallow WebRTC via DPI and whitelist it for category conferencing.
I think that's less likely to happen with WebRTC. But for workplaces that don't otherwise use it? Maybe.