I don't think it's quite as clear as you put it, and Bayer was by no means the worst offender in this regard. Other related scandals are linked to at the bottom of the Wikipedia page, and the Canadian Red Cross (for example) seems to have behaved even more negligently.
One would hope a company (Bayer) that arose out of history of using slave labor, medical experimentation and providing cyanide gas during the holocaust would be a little better corporate citizen than not quite as bad as the other guys.
I don't think it's quite as clear as you put it, and Bayer was by no means the worst offender in this regard. Other related scandals are linked to at the bottom of the Wikipedia page, and the Canadian Red Cross (for example) seems to have behaved even more negligently.