Same for whatever implementation of the Budapest Convention on Cybercrime you are living under in your jurisdiction. Also for webcrawlers that ignore robots.txt. They are committing a criminal offence.
I really do not get why nobody is running to their public prosecutors to have a go at this.
I am baffled why people are going "oh no what is to be done" about openai breaking into a competitors computers, when it is incredibly obvious: Charge them under the CFAA. "Oh but their research". Sandbox it from the Internet. "Oh it's too hard to do that". Skill issue, get good.
As I said: Weird that Robert Morris got charged for all of the computers his worm broke into. After all, he didn't do it, the computer program did it, that's completely different, apparently. https://en.wikipedia.org/wiki/Morris_worm