There are often other reasons. For example, in Korea console gaming isn't or wasn't a thing. It's PC gaming. Why? Because to Koreans in the 80s and 90s, playing something made by Japanese, their former occupiers, was unacceptable. Because of that they played games on PCs until that became standard for Korean gaming.

Other reasons PC gaming might not be a thing in Japan. It takes a lot less room for a console (especially NES/SNES/Gamecube) than it does for a PC. You plug the console into your exiting TV. A PC needs it's own space with it's own monitor and desk. Japanese houses and especially apartments are small.

I'm sure there are plenty of other reasons than just that a PC costs more.