I am fortunate enough to live in an area with municipal broadband. I'm also fortunate enough to have been given an unrestricted access tour of the local NOC. Granted, the user base is only 15000 users, the lead network engineer reported that typical constant bandwidth usage during prime time stays around 50 MB. If everyone on their program suddenly decided to go hog wild, they would still have sufficient network overhead. Oh yeah, they only charge $35 for a 10 Meg, symmetrical fiber connection.