The rich have historically funded the arts (e.g. patronage), public buildings, public institutions (e.g. Carnegie's libraries).
Useful businesses that require high capital are difficult to get going if no one has any capital.
There's no reason the government couldn't fully fund those things instead.
In fact, "businesses that require high capital" are almost always funded by the government. It's called infrastructure spending.
Let them go, then, the earlier the better and threat them as pariah. What good do you expect to gain from them at that rate?
I'm not sure how it is in France though.
[1]: https://www.bloomberg.com/news/articles/2022-12-14/new-york-...
Why do tax reliefs and strategies always benefit the big companies with lots of lawyers.
Lower the taxes of the common folk. Their interests are not being met, but those of the lobbyists.
The problem wouldn't be that they would leave. The problem would be that they would stay and become violent.
Eyeballing this, only 11 of the top 50 richest people in the UK have property as their source of wealth.
There's quite a number of very rich foreigners who economically have very little effect on the UK apart from monopolizing scarce inner city property.
So? Let them be violent. What are they gonna do? They don't have guns like in 'Merica.
They're dangerous not because they'll be violent (they won't be), but because they hold missive political leverage.
Not the structure built on it (well ... not much ... and you can often just tax that through the resources it consumes).
Not only are you taxing the asset that can't flee the country, and which the poor typically don't own, you also incentivise efficient land usage (it becomes too expensive to be a NIMBY).
And if you're talking about companies leaving France, then that's flimsy too. French citizens are among the richest in the world. International companies will pay higher taxes to access that market, and if they don't that's fine, a domestic company can step in or the government can snap up the productive capacity to invest in infrastructure.