If you had the inside information I think you would find DISH pays for more than 6 channels. And as Dare2be stated you are overlooking the overhead expenses that DISH also incurs to provide subscription service to you. Yes I would like the service even more if it was $10 instead of $20 but think of all the additional expenses before you decide DISH is making a killing on that $20 package.
if you want to knit-pick like that, then dish should have discounted rates for those of us than own and maintain our own equipment.
the welcome pack does not show a price increase coming, and hopefully it will not. The parents were upset over the last one, and another $5 increase would definitely send them back to OTA and DVDs.