Fair enough. If millions of the approx 3 million 100k and above earners were to leave, it would have a negative impact.
It would also have an impact on Dubai, given it has a population of 3.94 million. I say Dubai because that's the destination usually bandied about.
We could pick Australia if you prefer, population 26.77 million. 2% of Australians earn more than 200k AUD ( Equiv 100k GBP). That's about 535400 people, so I am not sure where another couple of million jobs in the same pay bracket will come from. Or the houses to put all these new immigrants of course.
You said: "I was saying that logically then even 10 leaving has a negative impact all be it very small". I think you could say infinitesimally small to be honest.
You also said : "Not all jobs are replaced, if you are hostile to net tax payers then people don’t want to live here.". My rough calculation above shows about 40k people on over 100k retire each year. How many of these people are not replaced do you think ? It can't be millions, or all?
This bit" Whole businesses are leaving and taking staff with them as the talent don’t want to live in the UK.". Can you name them ? And are these businesses leaving the UK because " the talent don’t want to live in the UK" . Leaving because of Brexit does not count of course.
I find this bit odd, because companies tend to move all the time. Often after take overs, re-organisations, off shoring etc. I have never known them to take all the staff. Usually a handful on short contracts yes, but not all. When it happened to me in the 90's, when I was sent abroad for a while as part of the relocation project, it most definitely not because people did not want to live in the UK.
This bit next : It’s not clear whether you are saying net tax payers aren’t leaving or if they are then it doesn’t matter."
It matters not one jot in the grand scheme of things.
See this link below. The Government are making it easier for them to be replaced.
UK Unveils Fast-Track Residency for High Earners After 3 Years (visaverge.com)
For sure, HNWIs are leaving. But these are not the folk on 100k a year. Many are non doms, and were not actually paying much tax anyway under the non dom rules.
UK millionaires are fleeing Britain in their thousands | CNN Business
Note the bit in that article that mentions Brexit. Quote : . “The hangover from Brexit continues to be felt, with the City of London no longer seen as the financial center of the world.”
I reckon this is just a project fear.
And I ask again, what Government would you prefer ?