The idea is to have it as an end goal. When all the non-violent prisoners are integrated in society and breaking the cycle, it may not seem like such a big jump. Plus, we will simply have a lot less violent criminals if people aren't locked up with others who think it's appropriate behaviour. Having a person that murdered someone living in a house with a 24/7 security detail isn't really that farfetched - and in 20 years is probably even more feasible, with newer technology.