No, not them either. I would much prefer billionaires are tasked with cleaning up the mess they have made. It can be picking out recyclables from trash, it can be pulling out blockages from sewers, it can be scrubbing individual seashells of spilled crude oil. 8 hours a day, 40 hours a week, in a jail. There are many more ethical and productive methods than slow painful deaths, and a lot of unpleasant work that needs to be done by somebody.