It seems like the article is missing a possible situation (which I believe is likely). Suppose -The ticket price is the market price and a raise would drive away a lot of buyers -A small portion of buyers do not do the full ticket research and are happy with $265 tickets.

Their conclusion that "Demand and Supply is out of balance" seems to assume that each buyer is the same and has some probability of buying at a given price. Instead, there are a few people who buy at the bigger price without thinking. The fact that these people exist does not mean that raising the price won't decrease the number of buyers.