If all our TV came via downloads (paid subscriptions, of course), you'd only ever see the shows to which you subscribed, and that leaves a gap: discovery. You'd need a service that allows you to browse for new show-feeds based on your interests or search for them by name, but you also need to be able to advertise them easily and recommend them to people based on the feeds to which they subscribe. Of course providers would want to insert ads to promote other shows, but viewers wouldn't want them interrupting their paid shows. We would, however, like suggestions such as at Amazon - "customers who bought this also bought...".
Mokalus of Borg
PS - Though of course in this case it would be "people who watch this also watch...".
PPS - And "suggestions for you" works best when it's genuine, not just ads.