If they didn't warn about the new capabilities of these models (by asking for fair standards/regulations) they could open themselves up to potential liabilities

If they didn't warn about the new capabilities of these models (by asking for fair standards/regulations) they could open themselves up to potential liabilities and heavy criticism from the public about not doing enough to prepare the world for the new technology. They're in a sort of damned if they do, damned if they don't situation. Their motivations can be endlessly speculated about, but they are being pulled in many different directions by many powerful groups that want wildly different things from the new tech (along with the obvious financial motivations as well).