Seems like a business that could be extremely profitable that is bad for society if I'm honest. Sometimes the answer is reversing privatization, not more of it. You're going to use an algorithm to judge suitability for your program but these algorithms are known to embed degrees of the biases already present in the justice system, in that case your service exists to extend the reach of these biases. But also I have trouble with a company whose social mission requires that it 'keeps it's hand out of the cookie jar' so to speak. On your end there will be pressure to further monetize the 'promisees', there will be pressure to restrict their freedoms further, there will be pressure to offload the costs of your program back onto taxpayers. Even if you manage to avoid those which I'm skeptical of, there will be pressure on the government side to push the costs of your program off onto pretrialers, further commoditizing an already over-commoditized system.