What matters is that EU AI startups are more restricted than US startups.

Schools have to have PRS (songwriters) and PPL (musicians) collection agency licenses if they have TV because the license they pay for TV doesn't cover the music "performamce" eg of an adverts soundtrack.

Individual solo workers can't listen to a radio at work unless they're unable to be accessed by the public.

You can time-shift a TV show (say), but you're only allowed to watch it alone, and you can't watch it twice.

UK is draconian in the extreme.

Personally I'd favour a 15 year term, and only for works that have an identical un-protected copy lodged with a central agency (at a high cost), or are DRM free. Transfer/download rights for copies bought on streaming services; format shifting, relaxed time-shifting, more educational use rights, etc..

Large internet companies like Google and Facebook will face even fewer restrictions because they have the clout to force economically viable terms on publishers.

There is very little chance that the UK will have substantially better rules than the EU post Brexit.