So from what I researched, Consoles or PC gaming in Japan isn't as popular as in the West. Apparently, correct me if I am wrong, the Japanese are very mobile people so they have a lot of downtime.
Considering a lot of them depend on public transportation and what not.
I find that this make sense. Time is very limited so if I am at home I am usually watching YouTube videos, using the internet,and watching T.V shows.
I barely would have any time to play on a home console like the PS4 or a Xbone.
Handheld gaming are awesome for people that have a lot of downtime. Usually this is pertaining to public transportation, waiting for an appointment, waiting in general, and what not.