I don’t know if I agree with the premise here. There is definitely a strong economic influence, but I think there are probably other factors.
People who devise these theories need to care less about “Is my theory possible?” and more about “how to I prove my theory?”
I understand that proof is impossible. I mean more like, “how to I present a lot of evidence that makes my theory look better than other theories?” Then you get into the classic ideas of falsifiability and so on.