What kind of cap?
Do those numbers refer to downstream or total? I know with WildBlue you have caps in both directions (and they're not the same - upload cap is much smaller than d/l).
They keep saying 1% of users blah blah blah - I bet if they implement a 40GB cap, we're going to find it's a lot more than 1% of their subscribers that cancel their service. I'm sure the telcos are salivating over the new customers they'll get...