You need to do more research. Other regulators are under ZERO obligation to comply with the UK. That is probably why you used the work "emboldens" rather than "obligates". Seems you are saying MS "wouldn't" or "shouldn't" just ditch the UK but that's your opinion. The fact is there I nothing legally stopping MS from choosing to leave the UK out in the cold and in fact, many insiders have said that this is the most likely course if the UK stands alone in opposing the merger. If this all happens, the UK would eventually dick tuck and endorse the merger bc the ppl of UK will not be happy with having to miss out on everything MS offers, possibly even windows. I would start learning Linux now if I were you, chap.