Net cafes are already a thing there, but personal gaming at home has always been dominated by the portable market or consoles, partially because Japanese companies are the ones making 2/3 of them, but also because the majority of the "gaming" demographic are younger people who live in small studio apartments in Tokyo, and would opt to have a TV with cable television and consoles in their living rooms.

With streaming becoming a big thing, at home media centres are slowly shifting to personal laptops (especially during the pandemic). I have maybe seen two actual gaming PC towers when I lived there (because again, you can go to a net cafe/PC bang for that), but a lot of the gamers I knew were slowly shifting to modest gaming laptops for their at home setups.

Took em a while to figure out consoles just don't deliver the good anymore

If only we could finally convince Vanillaware to release for the Steam Deck!