Re: agree completely
I am waiting for some of the usual cable channel providers to de-couple themselves from cable and allow direct subscriptions. Roku may be in the best place with their content-agnostic strategy, any provider could come up with their own app and you subscribe directly (many offer streaming apps and for now you authenticate using your cable TV account, which is really strange.)
Unfortunately, since most of the "usual" cable channels are owned by the largest US service providers, the resistance to decoupling them is very high. You'll likely be waiting a very long time.