Yet, Japan had no issue building a wide range of popular console video games but had far less success in PC games. Language seems like a better explanation as US and Japan had quite different UI constraints in their native language.
*(often free or packed into "1001 games for free with this magazine" disks)
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.
Similarly there are far more people fluent in English so small dev teams can reach a much larger audience without considering translation issues.