Why data availability is such a hard problem

Karr, A. F.. "Why data availability is such a hard problem." Statistical Journal of the International Association for Official Statistics 30, no. 2 (2014).
If data availability were a simple problem, it would already have been resolved. In this paper, I argue that by viewing data availability as a public good, it is possible to both understand the complexities with which it is fraught and identify a path to a solution.