This assumes the only purpose of selling is to maximise short term yield on that particular item. One of the reasons ticket scalpers associated with events are

This assumes the only purpose of selling is to maximise short term yield on that particular item. One of the reasons ticket scalpers associated with events are particularly despised is that the promoters of the event would much rather the event was affordable and full than expensive but half empty, which might be the capacity which yields the most ticket revenue.