I am very surprised that Japan is in third place on this list. The thing is that it is a rather pragmatic country. Yes, they believe in their religion and spirits, but are they as superstitious and gambling as the Chinese? Statistics say that they are. Apparently, Asian nations love colorful casino interfaces, and similar to their love for computer games and entertainment such as rooms with different slot machines, Japan guys like the atmosphere of gambling.
You are very mistaken, there is no reason to doubt Japan or any other Asian country. They love to gamble and even have their unique games. The gambling industry in Japan is huge. Just read the post above yours.
The gambling mindset is put into the japanese people right from their childhood. With Gacha machines, Crab machines in every place, the gratification of getting your hands on one of the rewards from these machines begins right in their tender years.
As time passes on and they become adults, they cant stop getting their hands on a pachinko machine which is another gambling station.
So nothing surprising here, gambling is very common among Japanese and often the salarymen are in debts to the local loan sharks.
This. Gacha machines can be crazy, and I've seen people online addicted to it. If you play such things as a child, you are almost destined to become a gambler when you grow up.