I don’t think so. They’re still making the exact same revenue per sale on average. The cost isn’t relevant here, another way of looking at it is in the case the customer pays nothing they’ve lost the cost of the goods and the profit they would have otherwise made, so it evens out.

It works out well for the seller if, by providing the option to gamble on the product, they increase sales, which I would guess it would (at the expense of being morally grey).

They said not generally intelligent, which is a specific and important property of AGI, not AI. In the tic tac toe example, the AI is intelligent (can play tic tac toe), but this intelligence cannot be generalised to playing chess, appreciating art, whatever the general measures may be.