Re: Commission isn't even the biggest issue
I can develop Android apps without using Android Studio. I can use my own editor; all I need is the command line to compile it. That runs on Linux, which I can run in a VM, currently on a 12-year-old Mac.
I had to pay only once for being on the Android Play Store, and about a quarter of App Store's annual fee (which is more like 80/year last time I checked, probably more now).
So it's a bit of a big hit just to find out if Apple's testers would like my apps or not (one of which is a web browser with extra accessibility features, which I suspect might get an automatic fail just for being a web browser; at least the Google folks don't mind that although Amazon rejected it).
Biting the hand that feeds IT
