no one would have to make a profit lol... a mod crew go's in completes the 10 percent of the game they need to and release it since all the copy rights are gona run out soon.
My understanding is that oft-quoted "10 percent" isn't necessarily all that accurate a measurement of the amount of actual work that would need to be done in order to finish the game.(I can't be bothered to go dig it up, but there was an interview with one of the ex-Black Isle guys that said not only would there be a good deal of work left to get the game "finished," that it's also not the sort of situation where a whole new team could just sit down and pick up where the previous one had "left off." (ie, it's not like you're building a brick wall, here - finishing a game, no matter it's condition, isn't the sort of thing where you can just "fill in the gaps.")
But disregarding all of that, it'd undeniably be quite an undertaking. I wouldn't be surprised if a bunch of modders some day were able to get a hold of the source code and maybe even one day put out something that (while it would never be exactly what Black Isle had been planning on putting out) you could at least call "finished." I'd imagine that would be a difficult process - and a bunch of modders trying to work together on-line is a bit different than having an actual team all working for the same company. But it's conceivably doable. I'll grant that.
But that's also not your original question, which I had been responding to - which was:
do you think they should make van buren as fallout 4?
And no, I don't see any reason why they should. It's pretty much a given that Bethesda will be putting out their own "Fallout 4" at some point in the future. I don't see any reason to replace that (admittedly hypothetical) game with what's left of Van Buren. As much a fan as I am of turn-based gaming, I just don't see as how that would be a fair trade-off.
"Finishing" Van Buren, on it's own, isn't something I'd have a problem with. I'm probably rather ambiguous about the whole thing at this point (I used to be disappointed back in the day, but it's been time and more to come to terms with the reality.) But I wouldn't be against the idea of the game eventually coming out. "Should Van Buren get finished?" Sure, why not. "Should it be Fallout 4?" No, I don't see why that should be the case.