I agree that the situation seems bad, but I think the proposed cause is not correct. Blogs also get their content "for free" and make very little money. I think the reason is likely that these publishers have very little competition. Why? I don't know; perhaps they have a large reputational advantage over potential competitors?
Yes, starting a new scientific journal is relatively easy, but getting a prestige is a chicken-and-egg problem.
Scientists get points for publishing in prestigious journals with high impact factor; that means in journals where articles are often cited. If you start a new journal, there is no reward for a scientist that would give you their article. A scientist can publish an article only once, and getting points for publishing articles is very important for them (it influences if they get grants or tenure). In other words, the system strongly penalizes scie...
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Razib Khan found this paragraph rather striking (who is reminded of this episode of South Park) and I would tend to agree that its a rather convincing argument.
Are publishers really so successful as rent seekers or is there something the original article is missing here? Also what useful strategies would LWers recommend to help minimize costs for someone trying to practice the virtue of scholarship? The obvious suggestions (implied in the article) seem to be emailing authors (and perhaps those suscribed) asking for the papers and acquiring and paying for membership in some libraries.
Another obvious option is using ... liberated databases of such academic papers.
Edit: Just wondering, has this been discussed before on Lesswrong?