A company that seeks to maximize revenue and minimize cost would then do a cost analysis on that risk, and determine how much money it is worth. Risk, be that of lawsuits, fire or meteors, if you spend money on it it need to be legitimized by doing the math and showing how much money a company would expect to loose by distributing gplv3 instead of gplv2.

I would very much like to see such calculations so the market could evaluate if it is correct. Maybe see what a insurance company would ask in return for covering it, as that is their domain of expertise. So far there has not to my knowledge been a single lawsuit over GPLv3 specific requirements, which is something I think a insurance company would consider. Good money with a risk that has never ever occurred is something they might like in a deal.