Anti trust investigation?
One can be but moments away somewhere or other in the world.
Charging a percentage is a bit dum, smacks of profiteering, and is surely designed to allow Apple to corner the market for itself. I would be mightly surprised if Apple charged themselves 30% for their own content distribution.
If they had set a flat rate then it would be easier to believe that they're merely out to recover costs + plus a small margin.
Having said that, my previous experience with on line subscribing to a newspaper's home brewed paid content was deeply unsatisfactory. It smacked of a bunch of amateurs not caring that they had your money but were failing to deliver on their contractural promises. Apple will probably do a much better job than that.
But I doubt that Apple appreciate just how popular Amazon's Kindle is becoming. Everyone I know has one / is going to get one. I know one person with an iPad. The content providers will soon start noticing and wondering whether Amazon are going to screw them as much as Apple are. With colour e-readers (capable of full video too!) just round the corner I think that iSomethings are going to start looking mighty expensive and rubbish for written content.
On the topic of Kindles, their success just goes to show how important getting the content provision right is. Sony have had an e-reader out for ages, didn't do so well because there was no substantial source for books. Amazon got it right; everyone knows that Amazon sells books, so it was no surprise to anyone that they could sell e-reader books too. Sony should have got in to bed with Amazon years ago. Too late now!