They probably had the original idea to be able to manufacture power supplies for other companies, but no one would buy from them as everyone who sells power supplies is some type of competitor as well.
PC Power & Cooling supplies were also not viable for OEM's, making them a high end select shop, which kept their prices high. They never could compete with the high volume, low quality companies.
Everyone is so quick to kill off these companies that make quality product without regard to price. I am glad I latched onto a couple of the supplies before they got shut down.
I think that leaves just two power supply manufacturers, for computer supplies. Both in China.