[notahacker]

The simplest market-based solution for killing troll patents I can think of involves anti-troll entities effectively using the troll's tactics against them: mass mailing people whose product might be accused of violating a dubious patent with a no-win no-fee offer to strike down the patent. Contributing to a pool to fight a patent is potentially even cheaper than settling it, especially if the quality of the patent and the NPE's incentive to defend it is low.

(of course the less good side of this solution is that the entity best placed to play the role of white knight is one actually linked to the troll who knows exactly who has received the litigation threats. That's probably where trusted bodies like the EFF should get involved)