I wouldn't look to a private prison company to reduce crime because that's not the need they are pursuing. The commercial war on crime tends to be waged by associations that roughly map to where/how crimes are committed and chambers of commerce. These organizations are the pooled efforts of businesses to fight common problems.
A private rail company might decide to lay down unprofitable track to massively grow demand and habitual preference for rail travel. Or, it might stick to more profitable tracks and in exchange not have to pass on the costs of disparate routes to the customers in the high-density areas.
A private rail company might decide to lay down unprofitable track to massively grow demand and habitual preference for rail travel. Or, it might stick to more profitable tracks and in exchange not have to pass on the costs of disparate routes to the customers in the high-density areas.