But if everyone uses their connection in inefficient ways (such as letting their video streaming run for hours unwatched) everyone will simply end up paying more at some point.
In Europe, as usage goes up, prices stays flat, because ISPs there know that the cost of a marginal bit of data is almost nothing, and they actually have to compete with each other on customer service and price.
Until you get to that last bit that your wires and equipment can handle. Then it costs a bunch of money to upgrade those to handle the extra traffic.
Cell phone plans have data tiers and pay-per-use. There's no reason cable companies can't do this either, except it prevents them from fudging costs.
I probably use as much bandwidth as anybody else, and I'd prefer to be accurately charged for it rather than have my provider pull shady net neutrality things or try to become an ad network or buy a media company to "bundle" their services or sell my data to third parties to juice their income.
I see both sides. Honestly, I think there was a better argument for it when the heavy users were a small percentage of users downloading a bunch of "Linux distributions" on bittorrent. Today, it's more likely to be a family that uses Netflix a lot.
Metering would change usage for better or worse and the fact is that a lot of domestic phone plans don't have caps, or at least meaningful ones any longer, although they may throttle data at some point.