Different areas have different price structures, I guess. We currently have internet and phone over fiber for about $60/mo. Full cable/DVR when we had it was just over $120 a month... what a waste... Wife has hulu so she can binge-watch network TV shows. I canceled Netflix when daughter went a little over five months binge-watching in her room -- didn't even bathe -- she's in counseling now. Wife has her own TV, she'll leave it on an on-air channel while she's playing games or something. We have a huge DVD/BR collection (Friday is "movie and pizza" night) but I can't remember the last time I watched TV in real time. And I'm completely ignorant of what passes for commercials these days.
I think you're right, internet will eventually support cable TV instead of the other way around. And eventually cable TV as we know it today will go away. I'm really hoping the entire non-demand cable paradigm collapses as soon as possible. It really hasn't been necessary for some time, and it's holding up other types of content delivery.