I don't know what Thomas_VirtuBox is doing in his real life (I presume something with computers, probably something that pays well) but it looks like he's certainly not fulltime into WordOps.
Maybe that is the difference to Centminmod (EVA), which is basically free, but to me it looks like (s)he has many commercial clients, that, I presume, pay, and I presume pay well.
I am pretty sure this could be a very possible for WordOps too. I mean Wordpress is free, but there is a MEGA HUGE market around it.