“It’s a cancer, so we should find a way to deal with the genetic cause of the cancer in our patient rather than cutting it out?”

Thank fucking Christ you’re not an oncologist, because your own metaphor shows why you have to get rid of the billionaires immediately. First, cut it out if you can. Second, if it starts coming back, treat it with poison and hope the body doesn’t die. Third, find a way to treat the genetic defect or environmental factor which caused it in the first place. You have to do all of those, but the first one is objectively more pressing.