From the last thread:

re: #406 gocart mozart

DOE Rick Perry at coal plant:”Here’s a little economics lesson: supply and demand. You put the supply out there and the demand will follow.”

— Taylor Kuykendall (@taykuy) July 6, 2017

Someone mentioned the burgeoning buggy-whip industry, and I also read somewhere about Blockbuster Video’s massive supply of VCR tapes.

We could also throw compact cassettes in there, along with prop driven biplanes, sail warships, and on and on. Supply does not equal demand.