After the rate hikes in 2022, capital flight exceeded the additional revenue raised by the higher rates.
The wealthy fled before the tax on capital flight was implemented.
And Norway had incentivised local governments to have a stake in the wealth tax which aided in the responsibility of the tax, something I haven't read France propose.
Because France is run by politicians who pretend that there is no solution to combat the threat of capital flight, because they are in rich people's pockets.
Even Warren Buffet advocate increasing tax on the wealthy. He stated that higher taxes did not actually stop them from investing or leaving the country with their wealth, when the US used to tax higher rate on the higher marginal wealth bracket. Only relatively few wealthy people do leave the country.