I just had this thought when I saw an ad on tv for Scratch 'n' Win. With Scratch 'n' Win you buy a game card, use the edge of a coin to remove a square of coating from it, and hope that underneath is a message congratulating you for winning megabucks.
But I'm an eczema-sufferer, right? So whenever I see that ad, I just think "If only! I'd be super-rich by now!".