This same question is something I remember struggling with years ago without resolution.
Unfortunately, I have been Tivo-ing old episodes of "Lost" and thought it may provide a real back to basics scenario to help get a different perspective.
Unlike the television program, the poor folks marooned on this island are living like true hunter gatherers, inexperienced ones at that. The pickings are so meager that they need to think about the energy needed to procure a specified number of calories.
I imagine these folks are about as poor, wealth-less, as they come. They may have a few knives, but they have almost zero assets.
Then an event occurs which is stranger than fiction

They discover what appears to be an essentially endless supply of MRE's. Things change almost overnight. Their gathered berries are now just supplements to the nutritious and delicious MRE's. Strength and vitality are returning to everyone.
Personal hygiene has experienced a noticeable uptick. Shelters have been constructed and a raft nearly completed. There is the time and inclination to party and works of art are being created. Rap music can be heard from every shelter. No, lets have a do over and scratch that last part
So it appears that this society has, relatively, a good deal more wealth than it had previously. Folks are back to overeating and their newly developed svelte bodies are becoming obese.
Unfortunately, it is discovered that the food underlying the top level of MRE's is contaminated with botulism. Sadly, their assets are discovered to be toxic
Their actual assets have not changed at all, but their perception of them has. Hopefully the energy derived from the good MRE's have been put to use creating other assets that can be used as a means of production, fishing nets, garden tools etc. Other than the good use they may have made from the nontoxic assets, their life is going to approach what they had known before.
I guess what I take from this dumb little story is that actual wealth was not created or destroyed. It was what it was. Perceptions and expectations did however change to a large extent.
If you add money and debt and look at wealth by individual the example becomes more interesting and much more complicated. I don't see it changing the big picture too much.
Perhaps one could argue that money would have made the small boom period more efficient, but the MRE's remain toxic.
I guess this cannot be anything much more than oversimplified, but warm up your flame throwers none-the-less.