Yes, swapping would have obviously come with a cost. The point was that swapping would have been entirely possible. Instead DuPont, even knowing full well the p

Yes, swapping would have obviously come with a cost. The point was that swapping would have been entirely possible. Instead DuPont, even knowing full well the potentially global and catastrophic level of damage they were causing, successfully lobbied to prevent any regulation against them for the better part of a decade after their effects became widely known. And it's highly likely that DuPont understood the dangers well before then.