It would be a good thing for academia to move away from predatory publishers like Elsevier and Wiley, and conduct all future publication through open access journals. However, even if this wonderful thing happens, those publishers remain a problem. Let's say that Elsevier goes out of business when researchers stop publishing with them and libraries stop ordering their materials. The citation chain still goes through a large number of already existing Elsevier publications. If Elsevier disappears, our heavily limiting copyright laws leave no mechanism to obtain these older papers. Some libraries gave up on paper versions of journals in recent years, so even they have neither duplicates nor access to the papers.
Part of solving the academic publishing problem needs to include changes to copyright law. Authors should be permitted to provide access to papers that their publisher no longer makes available. Libraries should be allowed to provide access to academic publications whose copyright holders have vanished. There needs to be some mechanism along these lines, or else Elsevier and their ilk will gouge the academic libraries even more severely.