Nintendo, while aggressively litigious, do so to maintain the value and exclusivity of their IP.
Their games also never go on sale, and all sell really well over time, unlike many releases from other publishers.
The result is that Nintendo are able to release a solid cadence of high quality, first party games free of other forms of aggressive monetisation, maintaining the value of the games as art.
Nintendo’s aggressive legal tactics and pricing strategy ultimately protect
the quality and value of their games.the vast profits their corporate owners enjoy100 billion Yen is roughly 650 million USD