I would like to know how you figure that load of horseshit. The average customer never even hits the data cap, so it’s not like it’s just cutting people off so others can get on.

Well no, of course not. That would upset people. What it does is make people afraid of hitting the limit, which makes them concious of data use and reduces it, even if it does not actually hit the cap.

Very few places have any choice about what service they get.

Most of the country has no choice, so remove choice from those that do, to make it even? Shouldn't we rather make it even by giving everyone choice? How about instead e.g. forcing ISPs to offer capless plans, while still allowing for capped, but cheaper, plans for those that prefer it?