I think it'd be a little different if they didn't lock down the device so that their App Store is the only (supported/permitted) way to install applications. If

I think it'd be a little different if they didn't lock down the device so that their App Store is the only (supported/permitted) way to install applications. If it was only "you sell through us, you pay", that'd be one thing; as it stands, it's "you want to run on these devices that our customers bought, paid for, and own, you pay us too".