Whereas for a Computer Scientist the open access technology itself is a potential research topic. So you get crazy stuff like a project to figure out how to perform searches across potentially hundreds of OA repositories in a distributed system, all of them with separate policies and metadata formats - instead of one working repository.
On the other hand, once things started to take off, this turned into an advantage. Can't get administrative funds for the much needed performance optimisations in your archive containing 25 years of data structures papers? Make it a research project and get a grant. This seems to have worked out OK for e.g. Southampton.
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