said by PapaMidnight :

Irrelevant. Persons who live in residential areas, although they may choose a business class account, will to still be subject to the 250GB cap, as well as traffic shaping. Considering this makes up roughly 35% of America, the point is irrelevant.

said by sonicmerlin :

Caps don't manage congestion during peak hours. The "heavy users" aren't affecting anyone if they're downloading during non-peak hours. And even the light users are slowing everyone down by checking their mail or listening to music during peak hours.

Caps are nonsensical and anti-competitive and there is absolutely no evidence that indicates they do anything to help manage network traffic.