Its simply down to corporate allocation and I guess a few more hangers on nowadays. Joe's get an allocation now don't they and as far as I am aware, you don't need any points to be a Joe's ST holder. As you have alluded to, it doesn't matter what the price of the tickets are or what you do to maintain your place. You are rarely going to catch the one above you. Money talks unfortunately. Platinum is a complete waste of money for anyone with less than a certain amount of points.