Things like this make me wonder if we're missing something by decrying the patent trolls.
When the patent holder is a non-practicing entity, there is no incentive for the holder to interfere with the creation of competing products (abusive attempts to extract a settlement notwithstanding). Anything covered by the patent is a potential source of licensing fees, simple as that.
I'm going to start thinking out loud here: Imagine patent holders are disallowed from directly exercising the techniques covered by their patents. Corporations that patent technology in their field essentially have to sell their patents to NPEs and license them back. The researching corporation gets an up-front return on their R&D investment (and a potential head start in implementing the new patents before the rest of the public actually sees them) and the public suffers none of the side effects of a government-granted monopoly.
The biggest wrinkle in a system like this would be the whole mess of submarine patents. If NPEs could be incentivised to make their patents broadly known, and approach licensees before they implement those patents, they could actually become a real value-ad to the system rather than a parasite: Imagine a one-stop shop where you could license a patent, get a reference implementation, and access experts who could help you apply that patent to your product. It could be similar to companies like ARM that license reference chip designs to manufacturers.
Again, I'm just thinking out loud here, so feel free to let me know if I'm off-base here.