This is especially good for business when we no longer expect the prisons to be self-supporting to the extent they can be. At one time, the DOC raised and prepared all the food and most of the furniture internally. Our older prisons were constructed by the inmates, right down to quarrying stone and making bricks. Politics, cronyism, and labor unions conspired to bring this to an end, and the present efforts at reversing the trend are focused more on the reallocation of money than the elimination of the need to spend it.
I will also point out that neither law enforcement nor custody of inmates should be in the hands of private enterprise. It is a public function which should be untouched by the profit motive.
If only we could get "public function" and "profit motive" to be mutually exclusive, we'd have progress.