https://www.merriam-webster.com/dictionary/niche
In this case the market is "security critical operations."
A prosecutor might be motivated by and could cite the "tens of billions of dollars" quote.
Building compelling narratives is one of the key skills a prosecutor (or any other lawyer) brings to bear in order to win cases.
> Calling stagex a "niche Linux OS" suggests that hardly anyone uses it.
https://www.merriam-webster.com/dictionary/niche
In this case the market is "security critical operations."