In Norway I've noticed that stringent requirements for privacy make it much easier to run things in the cloud if the physical location of said cloud is actually in Norway.

So if OpenAI is hosting their services within the borders of the UK, then they would also be beholden to UK law. Makes it easier for the financial sector, government and healthcare to use their AI models than if they would have to send their data to a datacenter in the US.

But as a US company it’s also under US jurisdiction. So the alphabet agencies still get their data handed on a silver platter.