Pop quiz: What's better for your wallet? a game with a 66% expected payout that you will play twice before you lose interest, or a game with a 97.3% payout that you'll play 31 times on average?
The comparison needs to be in terms of typical use, otherwise engineering for addictiveness gets a free pass because it often hinges on frequent small rewards and can have a near unity return on a single shot basis yet be a big money maker for the house.
Of course there are probably 'safer' forms of gambling that some addicts are presumably able to use to maintain their addiction at a level which isn't disruptive to their life. ... but single shot EV isn't the right metric. Some weekly state lottery usually has pretty poor EV, yet is seldom ruining anyone.
The comparison needs to be in terms of typical use, otherwise engineering for addictiveness gets a free pass because it often hinges on frequent small rewards and can have a near unity return on a single shot basis yet be a big money maker for the house.
Of course there are probably 'safer' forms of gambling that some addicts are presumably able to use to maintain their addiction at a level which isn't disruptive to their life. ... but single shot EV isn't the right metric. Some weekly state lottery usually has pretty poor EV, yet is seldom ruining anyone.