It is a problem in the tech industry. It's a problem in pretty much every other industry as well. It is worse in tech than most other industries because there are more men in positions of power? Maybe, but I don't think it matters to how we respond to it. We here on HN are nearly all members of the tech industry, not other industries. Any amount of harassment is intolerable and it doesn't matter if it's worse in Hollywood or some other industry. That's no excuse.
As members of a community/industry we have a collective responsibility for what goes on; for our own behaviour, for the behaviour we let men get away with, and for supporting victims.