[gist]

It's business. Not only that it's stated almost certainly when you get involved with the app store. Wouldn't make sense for Apple to do it any differently.

Apple did this in the 90's with peripherals such as video boards which at the time (80's/90's) were products that you almost always had to buy from a third party. Then Apple built them right into the hardware themselves. There is zero wrong with any company 'business' doing this. If you think there is you are not a business person. (Even if the competitors products are removed from the 'store').