It seemed to me for a long time that the Japanese authorities simply wanted to discourage ordinary people, and especially companies, from investing in cryptocurrencies - because the tax on stock trading is fixed at 20%. In addition, in Japan, companies that own cryptocurrencies pay even 30% tax only on the holding annually, which really does not make sense.
From the perspective of many other countries, Japan is really too strict with its citizens when it comes to taxes in general, but I wonder what their numbers would look like if that wasn't the case. I am referring, of course, to the fact that Japan is the country with the largest debt in the world, although it is true that this debt is mostly internal.