So, the point of the article is that broadband caps are good for people who don't use their service because it allows companies to charge them less than people who make good use of what they pay for?
Except, it doesn't work that way, ever. They charge you the same regardless of how much you use and then limit the amount you can use it. They cut their costs without ever passing any of that down to consumers.
It's probably also worth noting, like he does in the article, that capping usage doesn't actually help the problem that they intended it for.