This is SSRN - arXiv for social sciences. You can download the full text of the paper if you click.

The paper, I think, makes a more interesting claim than you give it credit for: those areas that can afford scholarly work tend to make use of free resources the most. Based on this work, it is possible that open access alone is not enough to give poorer universities, etc. the access to scholarly work.

It's not clear what "agenda" you think the paper has. It seems like an interesting piece of work.