While the ACLU and many other hard left groups joined the NRA in opposing McCain's half-baked, crazy CFR, don't hold your breath expecting GM, Ford, fast food, etc. to file amicus briefs in support of the NRA, NSSF, firearm dealers and manufacturers, etc. saying that individuals are responsible for their own actions. They'll be boycotted for supporting the NRA.
This would be like McDonalds getting sued for billing its meals as delicious. Why, people might order more if they believed that, and get fat and have a heart attack and die.
1. They only think they would be boycotted for supporting the NRA. I suspect the real answer is that their sales would increase.
Since they think this way we have to drag them into it against their will. The judge has shown us the way in the written opinion. Says it is perfectly logical for them to be sued with the same kind of reasoning. A little legal seed money to get some really big corporations on the wrong side of a few lawsuits and they would suddenly find they had common cause with the NRA and with Glock.