Even Jobs had problems (remember when NBC left the iTMS?). Apple's success with music downloads became a double edged sword. It was great for Apple as they became *the* hotspot for music, but the amount of power made movie and TV networks nervous. They already had to bend knee to the likes of Walmart in the physical retail space and weren't keen on dealing with an 800 pound gorilla in the virtual retail space too. And once Netflix proved that streaming was viable companies pulled their content from Netflix to start their own services and/or jacked up the price Netflix had to pay (the licensing fees Netflix plays jumped from $180 million in 2010 to $2 billion for 2014). Hence the big push by Netflix (and Hulu, Amazon, YouTube, etc.,) to create their own original content.
Also, and this seems to be the elephant in the room, what does

TV really bring to the table that a SmartTV, video game console, connected blu-ray player or roku-type set top box does not? Netflix, Hulu, Amazon, the UFC, VUDU, the CW, the WWE, etc., all have streaming apps on a variety of devices because they want to reach the largest possible audience. What's the incentive to exclusively release your streaming on

TV instead of going broad spectrum?

TV used to be a unique product when it was hard to get content from the Internet onto your living room TV but those days are long gone.
In a realm where content is king, and ISPs are offering their own movie and TV streaming services, what's the 'killer app'?