The iTMS added a couple wrinkles but the basic model was unchanged. Artists singed with labels to fund their albums. The labels partnered with retailers (from Apple to Walmart) to sell those albums/singles to customers and everyone got a cut of each sale. The record labels just had to get over the concept of legit digital deliveries while they were still in the heat of fighting illegitimate digital deliveries.
iTunes changed the music industry. Period.
I'm not saying TV's model can't be changed because it is changing. I'm saying that the change happening in TV land is exponentially larger than what happened in the music industry. The entire history of the industry is about getting people to tune into a certain channel at a certain time to watch a certain show. The more people you get to do that the more money you make. Now there's a push to let people watch on any device at any time and that completely torpedoes their business model which has been maturing for the last 70 years or so. Many companies try and straddle this line by not allowing streamers to see shows until they day after they have aired.
For a quick and dirty analogy, if the music industry was like the TV industry then retailers (Walmart, Target, Amazon, Apple, etc.,) would be their own record label and retail store wrapped into one. The music wouldn't be sold but given away to the public as an incentive to shop at their store. If Walmart made music for the explicit purpose of getting people to shop at Walmart how keen would Walmart be about making its music available to Target shoppers?
I don't care how big TV is, it just needs to get done. Apple is good at doing the impossible. With Steve Jobs gone, I think the TV market he dreamt of is gone along with him.