As an EU citizen: what's the point of moving/keeping an international startup to/in the UK if the UK is no longer in the EU? Surely the benefit of the lower co

As an EU citizen: what's the point of moving/keeping an international startup to/in the UK if the UK is no longer in the EU? Surely the benefit of the lower corporate tax would be outweighed by the difficulties of accessing the EU market and the British market is not big enough in isolation (compared to other English-speaking markets or the EU as a whole). In terms of growth potential moving to the US (to stay English-speaking and find more investors) or to the EU (to be able to easily expand to other countries) seem the more obvious choices. I can see how it might incentivise local startups to stay in the UK but at that scale the difference in taxation is likely not particularly noteworthy and simply an excuse to do what they already planned to do (i.e. "I don't want to leave anyway because I love working in Brighton but look how much money I'm saving by staying").