While the game's only been around for a handful of days at this point, making your business's Pokémon friendliness known to potential customers already seems to be making a difference. A Pokémon pop up is just an extension of that.
Surely, the game's popularity will die down. But for now, the augmented reality that is catching 'em all has real world consequences -- ones that inevitably will lead to some sharp businessperson making a lot more than just Pokécoins.
Also, feel free to send money my way if and when this venture happens.