One $5 chip 'sold' = a $3.50 profit (if you think they are not 'selling' these chips, you don't understand basic econimics).
One LE batch of 2500 chips = $8,750 in casino profits.
Why would they not crank out an endless stream of LE/commeratives?
At some point there will be a market glut, and people will simply stop buying LE/commeratives. I think it will be much like the .com bust, but on a much smaller and less expensive scale.
But that time is at least a few years down the road. :-)