The same reason why you can't go to any old Chevy dealer and expect them top have a $120,000 ZR1 on the floor waiting to be "test" driven. They may have a few base model Corvettes for you to sit in, and maybe test drive, but they won't/can't tie up six figures in one car when they could buy six trucks and have them ready for sale on the lot instead - plus their return's greater on selling six of anything over one high end car.
My point is it's unrealistic to the think every dealer's going to have the uber-expensive model regardless of what you're buying. In the case of a LBS - letting people "test" $8k bikes is risky business. So good on the C'dale dealer for letting you play with their expensive toys...