There is money but it's all vague and hard to get and usually with tax breaks instead of just money. I would opensource everything we built, but I have to eat something so it'll be when I die and/or the company is sold and/or we earned enough to make everyone eat during their life (with some reasonable amounts that assume hyper inflation won't happen) (it is contractually arranged). Many EU gov institutions use our software and would LOVE for us to open source it - they would immediately stop paying.