> I brought this up to someone else and was told that airgapping is apparently much more expensive than I'd naively think.

These labs are one of the most valuable and heavily funded enterprises in the whole world, that they can't properly air-gap their systems to me reads as if they "agents" and LLMs are not as good as they say they are, because if they were, why would it be hard/expensive to air gap a system? They already scraped most if not all of the internet, where did that data go?