Accumulation of wealth in our modern sense presupposes the establishment of
cities as centers of power, where the surpluses of first agriculture and then trade in luxury goods for the ruling class (in those cities) lead to immense wealth of those ruling classes. That's basically what broke down at the end of the Bronze Age around 1200 BC, an important factor probably being a disturbance of the trade in tin, the much rarer component needed to be added to copper to produce bronze (important factor, note, not nearly the only or even major one).
Michel Delving, the largest town in
the Shire, seems to fall far short of any definition of
city even of the Bronze Age, or even late Neolithic (Jericho was ancient, several thousands of years, though not continually settled, by the time some guys with trumpets are alleged to have shown up there). In a way the same holds true for Edoras, capital (
fortress) of a people still partially adhering to nomadic traditions. Or even
Minas Tirith, when compared to
Osgiliath.
So where can we look for a useful model of the Shire? JRRT often described it as resembling his early childhood home of Sarehole. Ummm, yes, but there's no Birmingham nearby. Unless you want to see the
Dwarf dwellings nearby as an equivalent.
Hobbits trading agricultural products for more complicated smith-works makes sense. Hard to imagine such an idyllic place anywhere in human history. But then the Northern
Rangers protected it (and
Bree, and ...) from dangers the Hobbits were not (no longer, perhaps never) capable of dealing with themselves. Neolithic farmers with some decidedly modern accessories and wealth distribution aspects? 🤔