Publishers are not going to fund games with this much intended scope and detail, because they know costs can quickly spiral out of control.
Certainly if you don't have good planning, budget, and control of scope.
Yet there are multi billion projects out there in the real world which are infinitely more complex than computer games, that somehow get delivered.
CIG could have controlled the budget and scope, they could have had good planning. They could have built up the game stepwise, modularly, delivering on their promises, and then expanding the game. Many games these days do this. They have a budget, they ship the core game, then they expand through DLCs.
CIG got greedy and also failed to properly cost what they were offering. Once again, go look at the stretch goals. It is clear CIG had no idea how much each stretch goal would cost, they just threw random numbers at random features and backers pledged.
The game as initially advertised was estimated at 5.5 million. We still don't have that game, nothing even close to it. The game they advertised for 65 million is even further away and will cost nowhere near that.
This is well beyond things spiraling out of control. There never was any control. CIG act like time and funds are infinite. The scary thing is, they might be more or less right. Backers seem happy to keep giving CIG money and excusing the time its taking with "game dev is hard yo!"
However, if CIG had tried to do it that way, i suspect they would have failed hard and fast early on. Because they couldn't have presold lots of dreams they had no idea whether they could deliver on. That promised 5.5 million game would have run out of money long before completion, and that would have been the end of it.
Could a publisher do it? Probably, but i guess it wouldn't be profitable. Too much of a niche gaming area. To get the base game out that might sell decently well would perhaps take a hundred or two hundred million, and that would only be on a par with the game CR said would cost 5.5 million. The DLCs would cost a boatload more money for all the extra things. I doubt they could make a profit out of it.