The settlement payout is on hold pending his bankruptcy case is why they haven't done something like this. However, lawyers for the families are in fact trying to have his assets placed in a trust or have the bankruptcy case cancelled outright because of his spending. By design it's a slow, complicated process where Jones has lots of legal (and illegal) avenues to delay paying. Fortunately Jones is so stupid and outlandish that he's likely hurting his own case so I wouldn't be surprised if a judge slaps him with more severe sanctions.