Does it pay for the Metropolitan Museum and other institutions to link their collection data to other institutions? Due to possible discrepancies in provenances, some institutions could find themselves a few paintings short or may find that certain works could simply be forged. A current lawsuit contends the MET has not returned Picasso’s ‘The Actor’ after acknowledging rightful ownership. Due to “incorrect cataloging” the museum might have been hindered from properly investigating provenance of the valuable painting but what institution would go out of their way to give up a valuable painting, especially a rare Picasso like ‘The Actor’.
My second link is from the Crystal Bridges blog regarding American Art Collaborative and the efforts to link museums and archives across the country.