Why would this institution necessarily imprison them? Why not just require the different risk classes to buy liability insurance for future damages they’ll cause, with the riskier ones paying higher rates? Then they’d only have to imprison the ones that can’t pay for their risk. (And prohibition of something for which the person can’t bear the risk cost is actually pretty common today; it’s just not applied to mere existence in society, at least in your own country.)
Why would this institution necessarily imprison them? Why not just require the different risk classes to buy liability insurance for future damages they’ll cause, with the riskier ones paying higher rates? Then they’d only have to imprison the ones that can’t pay for their risk. (And prohibition of something for which the person can’t bear the risk cost is actually pretty common today; it’s just not applied to mere existence in society, at least in your own country.)