Yes that is an even better economic problem: How can a seller same the good more than once! What seller would not want to do that. Of course this is an age old scam where a seller comes to town and sells the same good to three people, gets paid and then skips town leaving the three buyers to fight over who is the real owner.

Apparently, the airline industry is trying to find a way to do that without having three owners fighting over the seat.

Wow, those stats are telling: Did you really go 146 for 146 on AA? 100%

I did not track my stats last year (but am in detail this year), and in part for me it is harder because I have quite a few single class aircraft flights, but I know that as a 1K this year my upgrade rate zoomed from being a PE, but still was not 100%. Domestically it was probably 90-95%. Internationally I did 6 flights as a 1K (Made 1K in late August) and only requested an upgrade on five and only got 4, so 4 for 5 or 80%.