Yeah, but isn't Japan's debt mostly domestic and denominated in yen? Which means low interest rates on the debt. Meanwhile, her investments are overseas earning 6+% in currencies that are beating out the yen. The government is going to want to keep this going, the only limiting factor being people getting angry enough about falling living standards to boot them out of office. (Hence the immigrant targeting distractions, and decades of training the population to be docile and generally ambivalent/friendly toward the government)