It may also be that they just care about the money and don't interfere with the products themselves.
Once again, unless they have at least 51% of the company they don't have a say on anything. And it just so happens that Nintendo themselves own more than half of the shares.
Well then Nintendo better hurry up and buy more shares to prevent that from happening.
I'm no stock expert, but it doesn't seem to work this way.
In September Nintendo had ~130 million "outstanding shares" of 400 million "authorized shares", the remaining ~270 million shares owned by Nintendo are "treasury shares".
But the treasury shares have no voting rights: https://www.investopedia.com/terms/t/treasurystock.asp
"In addition to not issuing dividends and not being included in EPS calculations, treasury shares also have no voting rights."
So if the Saudi has 6.5 million shares (5% of the 130m "outstanding shares" with voting rights) and Nintendo buys 65m shares back, then the Saudi has 10% of the remaining 65m "outstanding shares", doubling his voting influence to 10%.
It would be better if some of the Japanese major shareholders would buy Nintendo shares from "Foreign Institutions and Individuals" (currently over 50% of the voting rights) to reduce the foreign influence: