It would make sense that some executive just wanted it to happen. So they spend a hundred or two hundred grand on these games. Now they can pretend to sell them. A few wealthy collectors will buy them. The rest could be given away in promotions or as gifts to big wholesellers (whatever that is in the beer industry).
It's a nice looking game and Dirty Donny does cool art, but price is no go. Assuming the WNBJM PFs and cabs were already ordered in one large BOM, all the guts remain the same. Stern likely could use a large portion of that BOM for the PBR game. Maybe that helped them recover some loss on WNBJM.
Since I know so much about manufacturing...