HN comment section pessimism is a new metric for evaluating your odds of success. "It's too expensive" or "Nobody needs it because we have X" on a project lead by a domain expert is not constructive criticism or conservatism, it's pure envy. PG isn't defending Mighty, Dropbox or Coinbase because he has skin in the game, but because he knows what the teams have achieved and what they could potentially achieve. I don't…
"No one went broke underestimating the intelligence of the American public."
HN just hasn't internalized it quite yet, so we have the counter-indicator.