PS3 was popular for compute clusters because it was sold heavily at cost at launch. That's typical for a console where the platform owner gets a slice of all so

PS3 was popular for compute clusters because it was sold heavily at cost at launch. That's typical for a console where the platform owner gets a slice of all software sales, but makes no sense for a general computing platform. The performance/$ was unbeatable because the economics were perverted. The PS4 was sold at break even price and couldn't run unsigned code anyway.