In my opinion, though, that's precisely a part of the problem: every couple years, there's a new One True Way to develop for Windows. I understand that breaking with old development frameworks is sometimes a good and necessary thing to do, but the sheer frequency of non-incremental changes to Windows development methodologies seems problematic to me.
Microsoft keeps (us Windows) developers in business; it may not be great for the businesses who retain our services, but it sure is great for developers. And actually, I'm not entirely convinced that MS reinvents all that much more than, say, the OSS web developer community do.
