What he has listed SQL Server aren't equivalent products, and I'm pretty sure not open source, much less the "free as in freedom" standard of GNU software.
VMware server is free as in cost.
Here's what I'm looking for in free software:
Versions of ProTools, GigaStudio, and Finale.
Video editing software
What?!?! Ok, take that gum out of ya mouth before you talk.
The article isn't really good enough to be worth a formal reply. I was just brainstorming related ideas.