It's only when complaints from the public arrive on mass at the feet of legislators will they finally take action. Hopefully, this decision will increase the likelihood of that happening.
Alternatively, with such decisions continuing to maintain the status quo over copyright, and with the rage of those committed to copyright reform deepening, discontent could widen to the extent where copyright law is simply ignored altogether and that policing it becomes impossible—copyright anarchy will then reign.
We are already at the beginning of the end of the copyright wars and publishers are still acting in ways that will ultimately ensure they'll end up on the losing side.
As a result of this decision, don't be surprised to see a fork of the Internet Archive created in some favorable jurisdiction along the lines of Alexandra Elbakyan's Sci-Hub. If that were to happen then it would serve these miserable the publishers damn well right as they have been acting as greedy unreasonable shits for many decades.