Wouldn't it be brilliant if all PC's and Macs went out of existence? That would mean that either Microsoft took to developing software for toasters, or developing for the Amiga, and wouldn't that be funny?
They would no longer be able to use their own backdoor trickery to get their OS to do exactly what they wanted it to do. They wouldn't be able to program those overly-huge executables, they'd have to keep them small, after all that's one of the good points of the Amiga.
They'd have to get used to using Rastports, Bitmaps and system friendly windows, rather than using their highly processor over-intensive routines which never seem to be the same in the various programs.
And, of course, they'd have to realise that almost any type of software they'd care to create has probably already been created for the Amiga. OS's, Word Processors, Text Editors, DTP Programs, Office Suites, Internet related programs, and loads more.
Luckily, I don't think Microsoft would either get a warm welcome to the platform, or actually want to come to it in the first place. And that can only be a good thing.