> Just because something is expensive to produce doesn’t mean that it’s worth that much.

Well ... it kinda does? If a commodity cannot be produced for less than $X, then the price of that commodity is not going to be that far below $X. The price can vary away to anywhere you like to signal for producers to open and close in the short term, but the equilibrium price point is ~= cost of production and the market will trend in that direction.

I'm going off one article [0] but there is enough gold to make a 28m x 28m x 28m cube. That isn't a lot of gold when compared to the 8 billion humans in the world and the amount of metal we go through (of iron, aluminium, copper, etc). Unless something really novel happens in the mining space, the price is never going to be low enough that an ordinary person can have a big block of gold. It will stabilise on the cost to mine pretty quickly.

There are other metals that are just as good as gold (like platinum) that get less press but are similarly priced.

[0] https://www.usgs.gov/faqs/how-much-gold-has-been-found-world