I feel like the rise of 3d printing and the falling cost of rapid prototyping has to play a part here. A giant Rubik's cube is the sort of thing that one perso

I feel like the rise of 3d printing and the falling cost of rapid prototyping has to play a part here. A giant Rubik's cube is the sort of thing that one person with a computer, a resin printer, and an obsession could design and test until it's ready to bring to market, and which is such a niche market that it'd be a terrible business decision to do it.