If the game becomes hotter and hotter, they can't buy the tickets at a price that allows them to make a profit or break even. They might have to buy tickets at a loss. If it's just some guy working out of his house, he might decide to not get the tickets.
They're trying to take your order and get the tickets at a later time at a lower price to make a profit. It's really a speculation. It's like playing the stock market.