A thing doesn't have to be "a piece of a functioning economic unit" to be worth owning. Examples: copper, gold, land, art, wireless spectrum, currency. There'

A thing doesn't have to be "a piece of a functioning economic unit" to be worth owning. Examples: copper, gold, land, art, wireless spectrum, currency. There's a perfectly valid rationale to hold each of these assets, and none of them are "productive" by themselves. Each of these has scarcity and utility. That's what matters.