The duopoly difference is real. But either side of a duopoly in a critical global market has tremendous power. Very hard, often impossible, to be competitive i

The duopoly difference is real. But either side of a duopoly in a critical global market has tremendous power. Very hard, often impossible, to be competitive in mobile software if you don’t support iOS. Microsoft didn’t optimize Windows for third party developers because of legal action. Supporting third party developer innovation was the foundational Microsoft strategy, long before and after they got into operating systems. The legal issue was using their platform’s defaults and product bundling to kill the opportunities and economics for potentially competitive platforms (Netscape, the web as an OS platform replacement).