Is there a good term for these types of services yet (Hulu with Live TV, YouTube TV, Sling TV, DirecTV Now, PlayStation Vue)? They're not quite on-demand streaming (Netflix, Hulu, HBOGo) but they're not quite traditional cable either (Comcast, Verizon, etc.) I like calling them Cable over IP, or CoIP for short.
Who is Cable over IP for? It looks to be no cheaper than traditional cable [EDIT: Many have pointed out it is cheaper than cable in some situations], but certainly buggier and more complex. It's still chock full of ads. And it has none of the benefits of on-demand streaming. I cannot think of a single reason to buy into this entire category.
I'll stick with my Netflix, Hulu Commercial Free, HBOGo mix of products.