What bothered me as an app developer over a decade ago when Apple Facebook and Google all started taking a cut of app revenues is that they all magically decided that 30% was going to be the number. They didn’t even bother pretending to compete to undercut each other, it was as if they all decided together behind closed doors that 30% was the number and that was it. After that I realized I didn’t want to be developing apps for these platforms anymore.