There is a "revolution" happening in the legal sector ( it's just that a lot of people don't know about it yet)...but there is revolutionary change slowly but surely happening.
One of the ways is through new (as Susskind calls it) "disruptive" technologies.
But the new technologies that are being incorporated into law firms will come to nothing unless and until new behaviours are adopted as well.
People like change...but they don't like change being imposed upon them.
So where are the new behaviours going to come from?
My guess is that the people who want to adopt the new behaviours will get frustrated by the lack of change in their existing firms and leave to either join together with others of a similar mind in networks, or they will gravitate to new firms that offer it.
Of course staying put is an option; just not a very nice one.