This sounds really strange for me.
If canceling the tournament means 200k loss and holding the tournament means 100k loss, you should hold the tournament.
But you don´t hold the tournament if you are going to lose more than by cancelling it (200k bigger loss in your example).
I can´t see the logic.
 
     
     
     
     
     
     
     
     
     
    
I'm surprised they're only waiting until the end of March to see if they have 1500. Don't most big tournaments get the majority of their entrants right before the tournament starts? Heck, it's not until when, October?
Yes, thats a bit suprising. But lets see if this is what they are thinking -
For the last point, I think even if they get a good feeling that by October they will get 1500 participants (or even lot less), they won't cancel the event. My reasoning behind this is that, Maurice has done a similar half million dollar event in 2005, successfully. And by cancelling, they will be incurring loss of loosing almost a year of their time and energy, let alone expenses they are incurring. By cancelling the tournament, they wont gain much but just will be able to minimize the loss if they hold the tournament. In other words, if cancellking the tournament means 200k loss to them and holding the tournament means 400k loss to them, I think they will go for holding it. Its only if they see, they are going to loose by a wide marging, in terms of publicity, rather than money, they will cancel.
I stringly feel they won't have to cancel.