Having said all that, I'm now interested in what the outcome of Windows being (largely, at least) Free Software would be. I suspect it'd be fairly like the Chrome situation - Microsoft's supported commercial release would probably still dominate even if anyone else could theoretically compete, since the sheer level of effort required to maintain a fork would make it impractical for anyone else to compete
@mjg59 I suspect that the primary benefit would be a far leap in terms of WINE compatibility/coverage, maybe better development/testing tools, and not a whole lot else.
