If it hasn't hit them yet, it might after the rant.
Given the Dilbert Employer From Hell publicity generated by the rant and the subsequent discussion, I'd say that they might have trouble filling in for the people that leave. Heck, even some of their current employees might read the rant and realize how crappy their current situation is.
Off on a tangent:
"I couldn't even run multiple dev environments on it, like I had to for my JOB, and building my code took 12 full minutes, instead of, say, 3."
Local dev environments? My current workstation has a mere 2GB memory and an Athlon X2 which was all the rage in 2005 :) The builds fly, because they are delegated to a compile farm. The added benefit is that I don't have to muck with the build tools settings.