[doesnt_know]

I seriously question the figures you've stated, but either way, it's not comparable to this situation.

Reddit doesn't create content. Reddit is a content aggregation service just like HN. You could probably make the argument that some subreddits generate content, which I would not disagree with, but Reddit doesn't pay for that content creation.

Also, plenty of blogs aren't ad supported, or aren't primarily ad supported. I can't remember the last time I visited a "popular" blog and they didn't have an ebook or some other form of merchandise for sale.

It seems to me that those that are most reliant on advertisements are those that house communities or just regurgitate content from other sources. If those sites all died tomorrow, I probably wouldn't care. (That includes HN and Reddit).