For what it is worth, the Yamauchi family has been slowly selling their portion of the company for nearly a decade. (https://www.campdenfb.com/article/nintendo-heirs-sell-stake-...). The shareholder structure is the only thing keeping in control and they definitely care about how happy shareholders are. Luckily, the particular shareholders they are concerned with tend to hold for an extremely long period of time (Japanese banks and holding cos).