yes, (well-known) found art has those two properties. the artist imbues the art piece with grand ideas about society (or whatever) at large, and a bunch of influencers (other artists, critics, collectors, etc.) find it interesting enough to elevate it to art.

i'd once heard a joke (story?) about found art where a janitor accidentally left a mop and a bucket while cleaning a gallery space and it attracted a crowd trying to discern what it meant. =)