And another thing: Thomas Sowell (I believe) has made this point in the past, and it is brilliant.
It basically goes like this - if not for people willing to spend huge amounts of money on a novelty, the novelty could never become mainstream. For example, calculators were not cheap when they first came out, but people that had bucks bought them. That gave the manufacturers the capital needed to start bringing down the prices, and the cycle continues to this day, where you can buy a simple one at Dollar Tree (and yes, at Dollar Tree, unlike the fake ones, everything is a dollar or less).
Now this hot dog stand may not be on the cutting edge of innovation (other than possibly showing how much people will voluntarily overpay), but who is to make that call?
Who? His boss.