When he is asked to defend it, he clarifies that he's only talking about companies that solve a major pain point, have no other competitors, and a low cost of implementation. (Obviously the failure rate of VC-backed companies with amazing PMF and amazing operating margins is much lower than 30%!)
His comment is the highest voted in this thread (assuming HN sorts that way) -- this is a classic example of 'this person says something I want to believe and has some numbers so I'll upvote it without even a rudimentary interrogation!'
