The bond market, where trillions are traded by sophisticated investors, is by definition efficient. If the price of something is higher than the "fundamentals

The bond market, where trillions are traded by sophisticated investors, is by definition efficient. If the price of something is higher than the "fundamentals support", that price will adjust because there are literally billions being traded every hour. You could say that the price of land in the Everglades is set because of unsophisticated investors, with relatively little money at stake. They can't be compared.