Because there's competition with the other broadcaster(s) who own 15 channels? How many competitors do you need until there's competition? Even if only two broadcasters owned every channel, wouldn't there still be competition between them?
THAT I will grant you. But it is far from the only oligopoly industry.
So you are down with oligopoly's?
You never did answer the question of whether you had been in business for yourself or not.
I have here is an example of how my business would have failed miserably.Christmas trees is the business.Now lets say customers come to my business to purchase a Christmas tree.I have many to choose from,different shapes,sizes,and prices.However there is a catch.In order to by my Christmas tree,you must also take it with the decorations at a higher price.Of course my business would fail in no time flat,most customers would move on to the next tree lot.But,lets say me and maybe 3 or 4 others owned all the tree lots,furthermore we all agreed to go with the decorations included for a higher price.Customers would have no choice.Either buy the trees decorations included,or go without a tree.I can tell you that a lot of people would take the deal,they wouldn't want their children to wake up on Christmas morning with no tree.
It's like that now in the pay tv industry.There are maybe 10,and that's probably being liberal,companies that own all the top rated networks available.They know that people aren't going to go without tv,it's that simple.Take for an example ABC,say they get x amount of dollars from all the providers to carry ABC/ESPN/Disney suite of channels,as soon as NBC,FOX,and CBS,finds out how much ABC struck a deal for they will be asking for the same amount.It doesn't matter how good their content is.They can do it because they know if the providers don't pay,they can pull the channels,thus causing a huge uproar from angry customers over missing channels.To me that doesn't define competition,I can sum it up in one word...
Greed