One advantage of a gold standard is that real interest rates can’t fall below 0%. In the present, if I keep my savings in a money market account, I get 2% interest but inflation is 7%-30% (depending on what measure of inflation you use). This makes it hard for me to raise money to start a business. If I try to accumulate capital via saving wages, I’m fighting an uphill battle against inflation.
Negative real interest rates subsidize banks and large corporations. They can borrow at 5%-6%, while inflation is 7%-30%. Using leverage, they earn huge profits, just from their extensive use of debt.
For example, Freeport McMoran bought out Phelps Dodge. They loaded up on debt to fund the purchase. Two years later, copper prices have been rising 20%-30% per year. The debt that funded the purchase was around 6%. Freeport McMoran’s management and shareholders profited from leverage and negative real interest rates. This profit isn’t free; it came from somewhere. When my dollars lose their value to inflation, part of the proceeds go to corporations like Freeport McMoran. In this manner, negative real interest rates encourage consolidation of industries.
Under a gold standard, you would see a lot more small businesses and fewer megacorporations. Suppose a small business owner wants to raise capital. Reinvested profits works very slowly, because of the inflation problem. A small business owner can only borrow at very high rates, or not at all. The small business owners is at a competitive disadvantage relative to large corporations. Management of a large corporation can borrow a lot of money, use the proceeds to bankrupt smaller competitors, lobby the State for regulations that shield it from competition, and then wait for inflation to make the borrowing profitable.
There’s also a common fallacy you’re using. The total value of the economy is a lot greater than all the gold there is. Therefore, a return to a gold standard is infeasible. That assumes that someone, after receiving gold, puts it under their mattress. In practice, a gold coin will change hands many times during a year. In this manner, the size of the economy can be a lot greater than the supply of physical gold.
A gold standard is a fair benchmark for determining price. You can have on a gold standard without shipping physical gold. For example, if imports equal exports, you’re on a gold standard but you aren’t shipping any gold around.
If you follow Austrian-style “time deposit banking” or the “Bills of Exchange” system, then you can have trustworthy paper promises for gold that trade at parity with gold.
However, if the government issued a declaration that the US was on a gold standard again, that would be a windfall profit for anyone currently holding gold.
You may ask “If gold is such wonderful money, why aren’t people using it?” People don’t use gold as money due to taxes and regulations. If I use gold as money, I pay a GREATER taxation rate than if I use Federal Reserve Notes as money. I can’t go to my bank and make a deposit of gold. Taxes and regulations make it impractical to operate a gold-denominated warehouse receipt bank. I can’t easily trade back and forth between gold and Federal Reserve Notes because taxes and regulations make it hard to operate a gold dealer business.
The correct way to return to a gold standard is to repeal all the taxes and regulations that prevent people from using gold as money. That isn’t going to happen.