>>36086235Most of the websites talking about this are in Japanese. I won't spoon feed you everything since Fuck you but I'll help you out a little:
1) The source of Gamefreak salaries come from a now defunct employee run blog on Gamefreak which talked about their yearly company trips, great benefits, custom business cards, and salary that was comparable to Google as well from a job insight company like Glassdoor called "Recruit" in japan.
The source on the offshore island accounts are everywhere if you look up "tax haven Japanese companies" or "tax avoidance japan." Every company under the sun there has them because japan has ridiculous tax rates like the US and Europe. Nintendo, SEGA, Konami have them along with many others such as Gamefreak, Creatures, and TPC
https://ameblo.jp/himetoatomu/entry-12161148254.htmlSample list but there's a lot more sites talking about this. Most jap companies have an account with either a Luxembourg, Swiss, or Singapore account for selling the ip back to themselves to eliminate taxes on the books
You can also learn more about how TPC is structured by looking up the history of creatures and their purpose by looking it up on kapanese
Ishihara and Masuda being greedy is literally common knowledge in Japanese forums and investment sites that quote them as "business savvy"