That's just plain tragic. They will never be able to make something worthwhile as long as they work for a big company. If they wanted money, they could've started their own project and asked for donations. Just look at how popular this thing is, I have no doubt that they would've successfully kickstarted it. My guess is that majority of the team went through a severe burnout over the years and went: "Fuck it, I do what I want to do".
Yeah, if they had formed their own indie studio and made Gothic-like RPGs of their own, they would easily be able to fund initial development through Kickstarter or Patreon just from goodwill they earned with this mod.
And they obviously would have no issue working on something without pay for a while, either, so money isn't the biggest obstacle here.
It would be a guaranteed bestseller for an indie studio.