It does remind me of cooking the goose that lays the golden egg. Or was it the straw that breaks the camel's back?

Too many issues = collectors can't keep up, they stop collecting.

Too small numbers, limited editions = drives out collectors on price and availibility.

Too many issues that special interests control = collectors drop out because they can't get anything from the casino anymore.

Bad Designs = lack of interest.

There's a delicate balance, and that's why some casinos can continue to have machines and make them viable, while other casinos just drop the program.