To me the best analogy familiar to this board would be the Blue Bell listeria incident. Three dead. Honestly if you know food production it was definitely on the same level. In fact in my view an identical level of gross negligence. Just completely inexcusable. Multiple breakdowns, some heads in the sand, cheaped out on the manufacturing floor, ignored the issue, and people died. But it was fixed (hopefully). (I guess also I will say "in" before someone points out criminal chargesbut the charges were for the cover up, not causing the deaths in the first place).
BP is still pumping gas and if the Deep Horizon platform was salvageable you can bet your bottom dollar they would have moved it, salvaged it, renamed it, reviewed and revised procedures, and stuck a crew back on it. (FYI no individuals charged, company pleaded out and paid criminal fines).
My point is these are all businesses, not morality shops. They didn't just shut down and stop after some very serious mistakes and systemic breakdowns.
In any event, they can clean house on Rust. There is a script and many days of film. Everything else could, conceptually, be replaced. Maybe a few people attached with the power to avoid getting booted. Even the director could go. They may even be able to replace Baldwin, at least as an actor. Who knows who has control. Baldwin may have some control to keep himself attached to it, but I doubt his power is complete, and I doubt he has absolute, final authority on casting . It's very unlikely that it's all his own money (he may have that kind of money, but his manager would never let him 100% fund a project like this). I doubt whoever is in control will do so, but they could even recast him, use whatever salvageable film they have and re-shoot certain scenes. After all, he's not Sam Elliott or something. He's not known for Westerns. Happens alot. So it is possible to complete production and clean house at the same time.
Westerns are notoriously unreliable at the box office. That's why you don't see that many. Name your favorite western and there is usually a story about how it got made because one person had to stick to it and drive it through (Tombstone, Silverado, Unforgiven). Maybe whoever controls the money here closes it down. But it won't be out of guilt or some moral compunction. It's a business like any other business, and there are people across the income spectrum depending on it.