[ribosometronome]

I believe you're arguing in bad faith. Are you just becoming aware of these companies 30% cuts? Why were you calling Apple a monopoly if you think this is a cartel issue? What evidence do you have of cartel behavior other than that people followed suite in setting rates?

[arrosenberg]

You shouldn't make that assumption without significantly more proof. Why can't it be both? In the App space Apple has the dominant position in a duopoly, and in the software distribution space more broadly there is cartel-like behavior occurring regarding commissions because distribution has become a major chokepoint (I'm guessing thanks to DRM, but that's probably oversimplifying).