You have to buy the machines, receipt rolls, maintenance, pay people to run it, etc. The only way to have a sustainable non-negative expected value would be to

You have to buy the machines, receipt rolls, maintenance, pay people to run it, etc. The only way to have a sustainable non-negative expected value would be to pay expenses out of taxes. I'd expect that many tax payers would prefer their money to go to other places than for gamblers to have better odds.