Right, so how did the "highest hacker to user ratio" diminish then? You or I are probably misunderstanding something.
If they just meant "the hacker to user ratio" diminished, they should've said that, but it seems like a weird way/phrasing to acknowledge that linux-using-hackers sell to non-hackers (and is a no duh).
Carmack's point was that linux was a good place to get hackers, so it's good for him to target as a business, but maybe it's better to get them on mac now (in 2025). I don't know: I use a mac laptop outside of my office, but I mostly just use it to browse the web and remote to my linux desktop inside my office. I wonder sometimes if it is important to target mac to get smarter users, and so I might believe mac has the "highest hacker to user ratio" now when in 1997 Linux definitely did. Depending on what I'm doing the bsds might be a better focus.
That is, I suspect that Linux might not actually have the "highest hacker to user ratio" anymore, which is what I think the person I am replying to meant as well. I don't know; and I don't have good reasons for believing such a thing that beyond my own experiences, but I'm curious and willing to be convinced, and so I ask questions.
My point was that computing in general hit the mainstream and running Linux became much more accessible and practical. So this influx of people now using computers diluted the ratio. Also non Linux based OS's became much more friendly to hackers or would be hackers.