True. You'll find Windows XP based terminals on many industrial machines. Its pervasive but outnumbered where "running the workloads" comea into picture.
The dev bubble is not that small. This very website is I'm pretty sure not served from Windows.
Other than stack overflow or few handful of exceptions, very little is actually served from Windows if I'm not wrong.
>>wg0+(OP)
I'm consulting for a company with 5000 servers right now, and maybe a dozen run Linux. They've still got a few hundred Server 2008 boxes running with EoL licenses. We looked into migrating to Linux but it's not an option.