alt Hacker NewsThere seems to be this mentality among a large number of people who publish open data/research/software that everything is fine as long as no one else makes money using it. The second that happens, they're furious and act as though someone unfairly profited off of their "unpaid labor" (read: that thing they did purely for the love of the game). I think it has to be some sort of feeling of resentment and/or stupidity that _they_ were the person with a million dollar idea that let it slip through their fingers.
It's not that difficult. You invest effort into research in the hope it'll give you a competitive edge. If someone else can come along and reproduce your results practically at a much lesser cost, then you lose that competitive edge. You're back at square one, except you've lost the cost of the research.