If this ever came to anything it would challenge corporate lawyers for all of about 10minutes - while they completed the paperwork to enact a transfer of domicile outside of the UK.
Of course, if you're offered free money, you'll take it. At the moment nobody understands how this will work. I am assuming that workers won't be getting actual shares but just the benefits (ie dividends) of having the shares? If so, how will this work with multinationals - will their...