Key points are not available for this paper at this time.
Jan Velterop, On the road, June 23, 2006. Excerpt: Comment . I like Jan's question and don't have an answer. But I do have my own road analogy to throw in. One objection to OA mandates for publicly-funded research is that it's wrong to spend public money on goods used by only a subset of the population.
Peter Suber (Fri,) studied this question.