Yesterday the same arguments were used about OpenAI when Sam Altman said something similar: https://news.ycombinator.com/item?id=49652270

It gets to the point that by Occam's Razor the more likely and reasonable explanation is that Dario Amodei and Sam Altman are just actually afraid of the disastrous impact ASI may have on the world, and that the race they're in is not good, and calling for help to governments in form of regulation and an international treaty.

Or they want a wall against competitors. Who knows.