An expensive bag or watch “does” nothing different than a less expensive one, so it is not functionally different than a share in that its purpose is to gain or

An expensive bag or watch “does” nothing different than a less expensive one, so it is not functionally different than a share in that its purpose is to gain or lose value, so the owner can show off. Except a publicly traded share is much more liquid. An expensive watch does even less than less expensive watches, especially smart watches.