We use GCI's new No Worries plan at 134/mo for 300gb downloads. Last fall we had 3 people streaming their netflix, MLB, HBO, and etc and only got close to the cap once out of four months. Even then, that was during baseball playoffs.
J-Rho just hasn't updated his GCI plan in a while. Even though the same cost plan would get him more benefits and data without increasing his monthly cost.
I think M&K got around the AT&T problem by getting a microcell.
AT&T works really well along the road system. If you start looking at rural Alaska, GCI is the only cell provider worth using.