Lump-sum tax only applies to foreigners, not Swiss nationals. Swiss wealth tax might be somewhat leaky, but still accounts for a non-trivial amount of tax revenue. https://voxeu.org/article/wealth-taxation-swiss-experience

I'm aware of Swiss taxation differences between different cantons, as well as the ability to negotiate your taxes. The OP mentioned wealth tax in Europe and my comment was in reference to that.

I'm personally not sure wealth tax is the best way to tax capital, but I wouldn't rule it out either.

I must have hit a nerve to warrant accusation of ignorance.