>Okay what happens when an AI agent hacks a children’s hospital and turns off the all the ventilators? “Lol whoops”?

>What about power infrastructure?

Probably the same thing that would happen for another "accident"[1]: the entity is responsible in civil court (ie. has to pay monetary damages), likely not prosecuted in criminal court.

[1] It's not hard to think of recent cases, eg. the recent fiber cut causing air traffic control to go down, or the botched crowdstrike update