it will happen as soon as someone throws up the money. Also, lots of other stuff to think about that...well, no one thinks about..
Cat hours. Cat time. Fuel. Big one is wear and tear on machines. Especially at years end.
These contests go after the resorts are closed, usually. Not a lot of people want to kick around and build stuff after they just did that non stop for months...
Exposure? Is it even worth it. Money wise.
Snow. Takes a lot of snow to do this. A lot of resorts don't have the snow, or if they do, it is not easy to just pile that stuff up real quick and make some jumps.