I think you're completely wrong. If there was no opensource, we would have an ActiveX internet with Silverlight and DCOM+ and still struggling between different software renderers in a world without Chromium. I mean that the open source has opened up what the software world is and what it can be. Every opensource software enables (keyword) the paid software world to cooperate. All these jobs you see are there because there is Linux, Angular, Javascript, Python, Go and all their opensource library companions. Also Microsoft understood that, it's time you also do.