So much mis-information in this thread.
First off, some registered non-profit group is running this 50/50 draw and I am not sure if the Calgary Sports and Entertainment Corporation (which owns the Flames) is a non-profit group. Actually the non-profit is Flames Foundation for Life,
link.
Second, rules are
here for raffles over $10,000 in value. Amount will be carried over if no one claims the price - I can only assume this is a 'bearer' type raffle which is referenced by section M18 at the above link. The non-profit could also donate the unclaimed amount to a charitable beneficiary approved by the AGLC..