Even fiction can be grounded in economy.
“our protagonists aren’t typical Hobbits. Bilbo, Frodo, Merry, and Pippin are all very clearly members of the landed gentry, the landowning class that controls most means of economic production and maintains social dominance over the Shire. This isn’t really extrapolation or interpretation, it’s more-or-less text, and I suspect the only reason it’s not spelled out is because Tolkien assumed any reader would understand that intuitively. “