Well...you have to relize that they made a business from sueing others with deep pockets and until they finally had someone that didnt back down, did a pretty nice income from it.
I do see your point on being the mfg of lighting products..but the way it usually works, the patent holder first has to find out that you are using a device that is not paying him royalties on the patent. So the start by sending letters demanding you stop infringing on his patent, that can go for a year or so. If they are not in the business, then not sure they can recover anything because, the way the law is, you cant sue for a billion dollars, you can only sue for loss of revenue from when you started to ship the product. Now, the LED mfg is a better target since they are shipping more product specific to the patent, and can generate a larger settlement than little you (ok..so what if your using 10K/month...they are shipping 1000K/month..do the math)
Bottom line...patents are hard to enforce, takes years to even get to the docket, hard to prosecute, and so if they send you a letter (doubt it would ever happen) you comply and start using someone elses white LEDs. If your using a CM, just tell THEM they must use a approved vendor.
I see patents as a way of not getting sued. If you own it, then nobody can come after you. But if you get violated, be ready to make sure its worth going after.