There seems to be some confusion/mis-interpretation about the 5 part.
This is called 五回のなぜ in Japanese ("Go-kai no naze," or Why Five Times) and refers to root cause analysis. Of course the number of times the process need be repeated until the root cause is identified is variable. Five in this case is merely a jingly mnemonic, as Japanese people are so fond of.
Two contemporary factors that argue for less war making stand out for me. One is technology, already being touched on elsewhere in this thread. Militaries now command destructive power that better approximates what is required to accomplish a goal, enabled by technological improvements (i.e. footage of the JDAM guiding itself through a structure's window during the Gulf conflict).
Another factor is that the age of commercial airliners and the global transport systems has made efficient global migration & trade a reality for decades now. What citizens would accept attacking their brothers and sisters in another country, attacking their trading partners with whom they make their livings? Perhaps this is now the quintessential limiting factor in making war.
Um, combined with societies becoming more sex-positive, we are edging closer to realizing the mantra Make Love, Not War!
To add further context, domestic investors are more risk averse relative to the modus operandi in the West. Prevailing Japanese business culture still frowns somewhat upon the primary pursuit of individual financial wealth, and this may be related to the difficulty of performing Western-style exits with big payoffs that attract investors and their funds in the first place. The young are able to better seize upon these opportunities as they are not as inculcated, they are systemically not let on the bus, and in their despondence are more apt to emulate the successes of their Western peers.
Given the high level of creative intelligence in Japan and also certain economic inefficiencies that Prime Minister Abe has acknowledged and is just taking steps to address, I hope these and many other factors give rise to a new breed of high-profile Japanese entrepreneurs with global aspirations. The future of country is in part depending on them.
Perhaps the author can come to an agreement with Spotify to integrate their service under different licensing terms. It might run into money, but that can be cast positively as forcing more clarity for the revenue model.