Expected value here should include some measure or utility. Like “expected value of useful money.” After the lottery is over 20 million, how much difference do

Expected value here should include some measure or utility. Like “expected value of useful money.” After the lottery is over 20 million, how much difference does it really make whether it’s 100M, 500M, or 1B. If there were 1k chances at 1M then I might consider a ticket. But 1 chance at 1B is about as good as 1 chance at 1M. Unless you’re pooling with several thousand people, Do your expected value at the point where the money’s impact levels off.