How would the cost of an elder-care facility compare to the cost of an extremely low-security prison for the elderly? (Not saying that the facility they descri

How would the cost of an elder-care facility compare to the cost of an extremely low-security prison for the elderly? (Not saying that the facility they describe qualifies as such.) If prisons serve the purpose, attract only the truly needy, and require none of the painful political discussions that setting up a huge system of eldercare facilities would require...