Well I don't have any basic beef with the act of selling a research paper, I just feel like it goes against the interest of whoever wrote it, which is presumably to get critique and improve the collective knowledge of the human race, both processes which are retarded by the restriction of access.

Though there is the whole question of whether non-scarce resources (i.e. data, music, movies, patented designs) should be free. Intellectual property laws as they currently exist cause a lot of problems.