So no incentive to behave inside then?
You want crime to increase then? ‘cos harsh punishment increases reoffending rates.
No incentives- it should be such an intolerable and frightful experience that they cry for their mummies and never want to return.
Any form of reward in prison negates the reason for sending them, if they don’t leave realising that what they did was wrong and the consequence for doing it is something they would not want to repeat then prisons are obviously too soft.
The obvious solution is for society to identify and work with those most likely to commit crime at an early age to prevent them taking that path, however, thats not practical.