> Just think about it: one company is in practice entitled to 30% of what any other business makes (in any industry)!!

This seems to be the case for all markets. I don't really see myself winning a case against wallmart if I complain they want a markup on sales of my product and that they are misusing their "monopoly" on "wallmart shelf space" by not allowing me decide to put my products in their store without their say, or without letting them earn money on the transactions that happen through their store.