Corporations do not like fighting off claims made by NPEs that assert patent infringement. It’s a nuisance and it is expensive.
While troll behavior is hard to stop (under our current patent system, there is no requirement that you build an invention simply because you own the rights to do so), penalizing law firms who represent these individuals may be the way to go. Under such a proposal, corporations would take away other forms of legal work from firms that represent NPEs.