> What does this even mean? Doesn't basic economics tell us about supply and demand. At a low salary, demand for developers will be high, and supply will be low

> What does this even mean? Doesn't basic economics tell us about supply and demand. At a low salary, demand for developers will be high, and supply will be low. At a high salary, demand will be lower, and supply will be higher. It means, "we're trying to convince people to get into this field because then supply will increase and we will have to pay less". Obviously, any individual company could fill as many positions as it wanted if the price were right. You are quite right that "half a million open jobs" is a meaningless statement missing a variable, like quantifying speed by saying my sailboat moved 500 meters.