[notahacker]

It's weird, because HN is usually the first place to downvote people into oblivion for complaining about how outrageous it is that B2B App X costs $15 per month when the majority of software aimed at consumers now sells for 99 cents or is given away for free.

B2B App X generally doesn't have the unique content or extremely niche audience of the hardback, heavily revised version of one's Phd thesis either.

[dalke]

Perhaps because HN readers think they can write equivalent B2B software in a weekend and monetize the result through ads, in-app purchases, and gamification, while they don't think they can write a book or good documentation that others would pay for?