If prison is so much cheaper, why don't they build something like a prison, but without all the restrictions on freedom, and house people there? It should be ev

If prison is so much cheaper, why don't they build something like a prison, but without all the restrictions on freedom, and house people there? It should be even cheaper. I can't imagine how it could possibly cost $100k/year to house someone. Rent for a small flat is under $1000/month or you're living in a failed state. Food is definitely well under $1000/month or you're living in a failed state, and everything else like electricity, internet, cellphone is under $500/month though I could be wrong on that one, so that's $30k/year absolute pessimistic max - what's the rest?