I like the 30% cut for the App Store. It provides them incentive to promote & sell apps, and make sure the App Store is a smooth experience for users, & a profitable one for developers. It’s certainly healthy, if on the high side. But I’d sure rather have a healthy app ecosystem than an unhealthy one. The problem with them experimenting with lowering the rate is once its lowered, imagine the fuss which would ensue if they then raised it.