I'm not sure I understand your question. Are you asking whether the TV business is easier to disrupt (for Amazon or others)? I'd argue that yes, it is, precisely because its distribution channels and ad dollars are much more easily shifted into digital and social channels. And because production costs are much lower. The minimum viable product for a TV show is, typically at least, considerably less costly and less time consuming than the minimum viable movie. It's very hard to make a blockbuster movie whose special effects, action, and production values rival those of a Hollywood blockbuster. But it's considerably less hard to make a low-budget, independent series that's every bit as funny as a mainstream series.

Or are you asking whether it's easier to become successful as a TV writer? Again, the answer is probably yes. You stand an equally tough time breaking into the TV writing business, but if you can get staffed on a show, you can make a respectable and steady income. TV writing is much more like an office job than movie writing is. You work on a staff, you usually have an office to which you show up everyday, you make a salary, you can get promoted up the staffing ranks every few years, and so forth. Of course, there's still some uncertainty in the mix. Not every pilot goes to series, and not every series lasts very long. And "staffing season," the period of the year in which shows staff up with writers, is fiercely competitive. But there's a lot of light at the end of the tunnel, provided you can make it there. At the top of the TV writing pyramid, you have show-running executive producers and creators. If one of their shows is very successful, these folks can do extremely well for themselves.