Somebody needs to brush up on their understanding of the concept of Supply and Demand.
Demand can also expand with supply. Take aluminum for example: before a practical method of refining it was discovered, aluminum was extraordinarily expensive and used mostly for ornamental display. Today, although the price of aluminum is much cheaper, it is used in many more applications. While it’s supply has increased, aluminum’s increased utility based on its greater availability, assures a much higher demand. The end result is that today’s aluminum industry produces many times many more wealth and more billionaires than when it was a rare commodity in short supply. Gasoline is another example.