My employer does not precisely "coerce" me to write stuff for Windows, but my job description includes tending to various things that do. Microsoft's hand in the coercion came long ago when it sold us Office.
Windows may be far from #1 in the world now. But is the work going away? Maybe so, but I doubt it.
As for Android and iOS, they are well enough as instruments of voluntary surveillance. (It's a lot easier to walk with a phone in your pocket than it is with an ankle monitor.) But have you recently explained to an accounting department or budget office why it should drop Excel for Google Sheets?