I don't think that the issue is whether the policy prevents casinos from making money.

FOr the sake of rounding lets pretend each chip costs $1 to produce.

Your theory is that the sale of 30 $100 subsudizes the cost of producing $1 chips and allow sthe casino to make a profit.

the 30 $100 sell for a total $3,000 at a profit of $2,770. If the Casino produced 500 $100 and sold only 35 of them they would make $3,500 less the $500 for a net fo $3,000.

The real reason for the short issues has been to try to benefit certain people in the secondary market.