Japan’s PC gaming market has seen insane growth over the last few years, essentially tripling in size between 2019 and 2023. According to data from the Computer Entertainment Supplier's Association (CESA), the market increased by about 187.5%, growing from approximately ¥82.2 billion ($560 million U
The actual answer is Vtuber.
Vtuber playing a lot of PC-only games or modding acene, making people get inteoduced to PC gaming.
There is an actual industry analyst, but I forgot the source.