Apart from already mentioned problems, copyrighted materials cannot be placed on institutional repositories because commercial publishers must earn their money. I did prefer that institutions support Open Access by paying publication fees for their staff so that these publications can be archived in the Institutional repositories.
Regards
Ngozi E. Osadebe (Ph.D)
Nnamdi Azikiwe Library
University of Nigeria
https://orcid.org/0000-0002-6512-5758
HIFA profile: Ngozi Eunice Osadebe is a librarian at the University of Nigeria, Nsukka. Professional interests: Enhancing access to higher education for people with disability, Technology Assisted Learning. She is a member of the HIFA working group on Library and Information Services.
http://www.hifa.org/projects/library-and-information-services
http://www.hifa.org/support/members/ngozi-eunice
ngozi.osadebe AT unn.edu.ng