I agree - this would be the best case scenario in the future, but my assumption is that it'll never happen this way. It's probably not cost effective for the network providers and the platforms like YTV/Hulu/etc. to go the a la carte route. They know too many people would go 'just the sports' route or go really simple/cheap, and there'd probably be quite a few channels that nobody would really want.
I don't think a lot of people realize what's happening though. Pretty soon, the money people think they're going to be saving by cutting the cord is just going to be shifted into different revenue streams. With internet + all the different streaming services I have, I'm close to or around $200/month. 18 months ago I was around ~$125 probably? It's getting to the point where I think I'm going to have to start making tough decisions about what I want to keep because I honestly just don't have enough time to watch all the crap I pay for.