[kelnos]

The difficulty of doing so doesn't obviate the necessity of doing so.

At worst, he works for the rest of his life with his wages heavily garnished. If he holds investments, he'd be required to liquidate and surrender some percentage of them periodically.

Of course, someone in his position could just live off his parents and not play ball. So you'd need a contingency for that. Maybe prison still does have a place, but only for people who refuse to even try to make amends for what they did?