And Charlie would put it this way: "I aint gonna pay Amazon and all my other OTT competitors to allow our subscribers to watch LESS Dish channels that we have no choice but to pay for, anyway. Let them pay for it and buy a Roku, but giving money (those who have such apps PAY for the right to have Amazon, Netflix, etc. on their devices) to the very services that are motivating subscribers to cut the Dish "cord" is a great way to got out of business a lot sooner. Let Amazon and Netflix pay to our customers, not us paying them to take our customers."
Dish has an ownership stake in Roku:
http://allthingsd.com/20120927/dish-networks-eyes-web-tv-and-invests-in-rokus-web-tv-box/
So, yes, they do want you to buy a Roku