Musings about librarianship: Are institutional repositories a dead end?

I've written tongue in check posts about  "The day library discovery died (for libraries)", I've been a skeptic of trends such as SMS reference, QRcodes and mobile sites (nailed the first 2), Altmetrics and 3D printers (the jury is still out on them) and generally worried about the death of libraries like any good librarian. Consider this post as yet another part of the series where I play skeptic or devil's advocate.This time I focus on institutional repositories.