... and stocks are a legal claim to some percentage of the assets of a corporation.

The only things that I can think of that are somewhat similar to cryptocurrency as a "store of value" are things like baseball cards.

...and even collectibles have some appreciable aesthetic qualities and enthusiast interest which exists independently of and generally strictly prior to speculators getting involved.

Baseball cards are propped up by nostalgia; you take away the nostalgia, and the value crumbles.