What a childish post.
You clearly don't understand what the average non-dom is like. These are not Anglophiles who will stay in the UK because it's all jolly nice here. They are uber-rich and extremely mobile. They will go and live wherever in the world they fancy. If they like London and don't get fleeced for the privilege of staying here, they may stay for a while, buying a Rolls-Royce from HR Owen in Berkley Square perhaps? Buying expensive suits from Saville Row. But more generally, spending their money, paying tax on their UK income, paying VAT, employing people. This is MASSIVELY beneficial to the UK economy.
Now, question: Do you want more of these people in the UK or fewer? If the answer is fewer, there is no hope for you and the debate is finished.
Hopefully you will recognise that we want more of them. You will recognise that their contribution to the UK economy is significant. Now, how much more likely do you think is that these uber rich people will choose the UK after the changes to apply tax all of their global income and take 40% of their global wealth off them in IHT?
I don't have the stats to hand - I can look them up as you can. But it stands to reason they will fuck off in droves. There's endless stories of financial advisers who had many wealthy non-doms on the books, but that they are losing their customers at an alarming rate.
This is just another example of flawed Labour thinking driven by bitterness and resentment. They'd rather see everyone worse off them some continuing to be extremely rich. And the policy will not work. Just like a wealth tax and other such tripe won't work. It doesn't raise any money, actually less, and will make everyone in the UK, poorer.