1 ) you cant work in the switzerland (you can have companys outside thats ok)
OR
2) you manage only your money, assets (so for a trader ideal)
then you can choose the special tax regime:
you are taxed on a calculated living standard that you have for example:
a) if you rent a appartment, then calculate your annual rental x5 (20.000 x 6 = 120.000)
and on that you pay income tax (it varies from canton to canton but not more than 30%) TAX = 36.000
numbers are only to show example
b) if you buy a house/app, then a theoretical rent is 5% of the value, that x5 and on that you pay tax
5.000.000 > 5% = 250.000 x 5 = 1.250.000 TAX = > 30% 375.000
all the rich formula1 drivers are living there
many company owners from all europe also.
would be much more to tell, sory for my bad english
BTW: Switzland has all you need, wonderfull place, center of Europe, but no sea

(but many beautiful lakes)