I think you're being a little too broad with your stereotypes:

"Many are too advanced, and too busy hacking, to even bother with sites like this or reddit"

"news.ycombinator.com appeals to the low end of the technical hacker continuum, and more to entrepreneurial/business oriented hackers"

I don't think being an advanced programmer and being business oriented are mutually exclusive. While I personally fit your stereotype(business oriented, low end of the technical spectrum--although I'd put myself in the top 10%), I know a few HackerNews readers who are both brilliant hackers and business minded. Plus if you make some money, you have more freedom to hack.