Not really.
Kids in Japan spend time with their families, playing with friends, and at school.
Teenagers want to get away from the family, so they go to the arcades or hang out with friends.
Early 20s are either studying or focusing on securing a stable income, with a bit of free time at home or with friends.
Late 20s into 30s are busy working (or just traveling to and from work) for a lot of the time, but have some time to do whatever they want.
Most are expected to take care of their parents as well, which can be a time sink. All of this, plus the pressure of finding a partner and starting a family in a country with declining birth rates, makes PC use unfavorable.
18~30 is the market with the most amount of free time spent at home. They have an income, and may not be in a situation (or want to be in a situation) where they can find a partner or people to socialize with daily. In come the VNs and dating sims.
Of course, this is generalizing, and there are other factors, but the important thing is that teenagers arenāt a big enough PC market to be valid. These things also explain why the mobile market is so big in Japan.