It's unclear if there's any way to measure it (short of polling the Dish subscriber base). That may be what Charlie is counting on.
Of course, IF it turns out that there is a way to find out and the number is large (depending on what "large" means) then Charlie has just given his competitors some ammunition in the war for subscribers and is just digging himself in deeper.
I wonder if Dish even checked before doing this. I know the networks have contracts and getting them up was a priority.
Would you do business with Dish if you would have known all of this??