It is a nice idea, but I don't think many private companies are looking that far into the future to figure out where to best get their revenue. They can gamble

It is a nice idea, but I don't think many private companies are looking that far into the future to figure out where to best get their revenue. They can gamble on something that might not be totally under their control years out into the future, or just try to get more bodies in the prisons now. A ruthless "rational" actor would go for the second option.