>Scalpers are the ones choking off supply by monopolizing huge numbers of tickets

The only way this would actually have any effect on "supply" is if scalpers were just eating tickets and leaving empty seats in the venue. The number of seats at the venue is more the "supply" than the number of tickets outstanding on the sales markets.

If a scalper was able to buy 100% of the tickets for an event, and then sell all of them at 3x "face value", then that means that the market was able to bear a price of 3x. The scalper did not change "supply" here...