There will always be enough entertainment to meet the demand of viewers. What we have now is a deluge of crap to meet the demands of advertisers wanting to sell eyeballs.
> There will always be enough entertainment to meet the demand of viewers.
This seems likely, but the idea that it will be cheaper than cable is pretty specious. The reason you can get TV programming so cheap for just the cost of a Roku and Netflix is because hidden in that content is the millions of dollars that already came from traditional TV.