I wonder.
Destruction of the constitutional relationship between the Federal government and the states, even for a higher purpose, may sometimes have more long-term consequences than the original problem.
I'm not sure how long Jim Crow would have lasted even without Federal intervention. Such thinking in the modern world would put a state at an enormous disadvantage economically, if nothing else.
Imagine an auto company deciding to build a plant in a state like that, or any modern business.