No compelling reason for Apple to get into this market...at least not yet. I think the big issue with TV isn't picture quality but user interface and content. These are two things that a set-top box can change and i am assuming apple will start with at WWDC. I don't think the TV service will be introduced until the fall...just in time for football and the tv season.
I think you are right! It is not the TV but the content and the delivery method! I can't see Apple buying Verizon, Comcast or Direct TV because they need something that would work Worldwide! Maybe Apple will put their own satellites in Space?