Good riddance. The whole premise of private, for-profit, prisons has always seemed deeply troubling to me. The focus of a healthy prison system should be to rehabilitate people and help them turn their lives around so that they contribute positively to society. That can take years of hard work by the individual, and require assistance from professionals (therapists, teachers, ...). A for-profit company by definition…
The purpose of imprisonment is to punish criminals by depriving them of their liberty. As a side-effect, society benefits because a criminal has been forcibly removed from visiting further misery on law-abiding people. Imprisonment is and should be a deterrent punishment - it is not a support group. One can both be in favor of abolishing for-profit prisons and also in favor of severe deterrent sentences for law-break…
And frankly if I had to choose between a reformed inmate who won't do it again but wasn't punished with cruelty and a hardened inmate who thinks he owes nothing to society I will always go for the former out of pure egoism.
It takes a certain transactional mindset to believe that harsher punishment result in less crime or that the suffering of the criminal will make up for the crimes commited. The lack of effectiveness for punishment to prevent future crimes is a well researched topic.