Sure, if you don't have people clamoring to buy you tickets immediately anyway that will provide you that money at no interest, that would make sense. In what way is that system advantageous to the current one, given the other incentives that exist to not raise price (public relations, mostly)? Also, given that I suspect brokers are worse at getting this right, since they don't get to see all the data, and you can make quite a lot from brokers on events that undersell...