707 votesChad Pesterwick commented
If you are worried about Windows @ this point you should probably get into a different profession. Or are part of the failed leadership of the Windows group. Their dysfunction has caused this mess, having Android and iOS surpass them with mobile marketshare. Windows 10 has not adopted as quickly as they might have hoped, so going cross platform is indeed the only viable strategy to maintain market value.
That is not to say that Windows is lost. The UI and UX is actually pretty decent, especially for Windows Phone. Since the value is not in Windows but in its user experience, a cross platform UWP would help perpetuate it to the different platforms, thus preserving (and promoting) value.
This isn't about making it easier to move from one platform or another, but for developers and companies to reduce the enormous costs associated with having to develop and maintain a codebase for each platform they would like to support. Products like React "get it" and are already beating MS to the punch (as always):
https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/Chad Pesterwick supported this idea ·