This is my practice. I commend it to others. This is an interesting comment and one that recurs regularly when speaking with librarians. On a campus, librarians and scholars form the two ends of a continuous chain. Scholars are not being serviced by some sector of the university that, from their perspective, is spending too much of the budget anyway.
Scholars produce scientific information and use it.
Libraries add value to that information by storing it, ordering it and cataloguing it in various ways. Without libraries, their catalogues and bibliographies, scholalry journals would quickly look like a big pile of paper. As a result, scholars should also learn to weigh their quests for visibility against journal costs so as to downplay collectively the excessively costly journals. Sometimes, choosing a different journal than the absolute most prestigious one is almost as good on the professional level, and it costs far less to the libraries. Making scholars more sensitive to this issue appears to be an important step in that direction.