"I should do the job that makes the absolute most amount of money possible, like starting a crypto exchange, so that I can use my vast wealth in the most effective way."

Has always really bothered me because it assumes that there are no negative impacts of the work you did to get the money. If you do a million dollars worth of damage to the world and earn 100k (or a billion dollars worth of damage to earn a million dollars), even if you spend all of the money you earned on making the world a better place, you arent even going to fix 10% of the damage you caused (and thats ignoring the fact that its usually easier/cheaper to break things than to fix them).