There's a country in the 30's that used misinformation to sell what you're suggesting and they, at one point, had a thriving prison system in less than a decade.
Don't be so polyannish.
SRC: https://www.ers.usda.gov/topics/food-nutrition-assistance/fo...
If you think prisons should have profit motives where growth only comes from continually seeking punitive policies to imprison people then I don't know what to tell you. The extrapolation isn't that hard and I don't see anything good coming from it. Weird takes.
Prisons don't get to sentence people, courts do.