I hope this could happen to the stationery business...
It is hard selling cards nowadays. I cannot pay the fees to enter shows & make money. It seems the younger generation is not interested in the art of a handwritten note. If they knew how romantic it is to write love letters & send them by snail mail!
Sending a handwritten thank you note to a prospective employer will separate you from the rest that emails. So go ahead and support the card designer & the post office: buy cards & write!