Re: No, I will not switch out the lights.
> Technically speaking, Windows 10 Mobile is not the same as Windows Phone.
That is part of the problem. WM6.x -> WP7 was a complete rewrite in a completely different development toolchain. WP7 -> WP8 was maybe just review and recomp, or maybe change away from yet another dead end. WP9 -> WM10 was another rewrite to UWP.
> more developers might make the effort to put out apps that support both mobile and desktop
Developers do not want one app for both mobile and desktop. They want a cheap mobile app that is simple to use _and_ a more expensive desktop application for better revenue.
Mobile users won't pay desktop prices for an app, developers don't want users to get desktop software at mobile app prices.