Bah I say! Their closing note is closer to the truth, having a rudimentary understanding of Game Theory does help when thinking about praxiology (a term Austrian economists seem to prefer when talking about preferences). The simple rules of commerce don't really allow strict rules and repeated play but they do allow you to randomly offer a $5, $10, or $15 coupon and see how people respond.
The tortured world of game shows of course does allow for Game Theory but this seems to be the one place where a theorist would be handy and none are to be found. Consider that miserable flop "Friend or Foe." Two teams of two would answer questions and build up some money. At the end the team with more money would play "Friend or Foe" against each other. If they both picked Friend they would split the pot. If they both picked Foe no one got squat. If one picked Friend and the other Foe the Foe-guy got it all. Retarded. If the other guy picks Foe you get nothing no matter what you do. So you have to hope he picks Friend in which case you get to choose to take half or all the money. Guess what happens? It was the cheapest gameshow to run ever, no one went home with any money (well, almost never).
I also have a beef with their statement "it has been taught to almost every one of the some 2.5 million MBAs and economists." MBAs?! maybe in the same way that Jurassic Park "taught" moviegoers Chaos Theory.