People go into banking and have shitty hours and culture because there's a nice rewarding story at the end of it (money, prestige, whatever) - similar to what would be at the end of moving somewhere prosperous. The problem with banking culture isn't an inherent problem with American culture, it's merely a product of a system where you have such a hiring system.
Unlike in banking, however, the toxic culture isn't a product of a company or market forces, but the outcome of such a restrictive visa regime. Change the visa regime, and the culture (eventually, you have to give it a generation) also changes.
