[kenjackson]

What about people under 30 who are starting their own businesses from scratch? For example startups, they tend to be using stuff like Ruby/Python/JS etc.

As someone who was under 30 during Microsoft's heyday (90s) I can say that most developers under 30 then also didn't use MS tools. Borland tools ruled the roost until VC6 and VB6 (around '98). And most young developers out of school back then knew Unix, not Windows.

My point is that it's a myth that there existed some time when all young developers used MS tools. In fact I'd argue that in terms of mindshare MS devtools are near their all-time high in popularity now -- it's that the Windows OS isn't as popular as it once was among the under-30 crowd.