You have to remember, HN is fully supported by YCombinator, and has a huge leg up on any possible similar sites. There will always be content thats encouraged to be posted here first from YC startups, and it will always be a valuable PR asset for those companies.
It doesn't have any pressures to make money, in fact it's basically a free place for PR and advertising jobs for portfolio companies
It doesn't have any pressures to make money, in fact it's basically a free place for PR and advertising jobs for portfolio companies