[throwaway60607]

Well I think I meant something in between. You don't need to be from old money to get a property in Monaco and much less in other places in EU - I got several, and I started literally from 0. And you definitely don't need to be from old money to rent an apartment in Monaco for half a year. A senior software engineer (contractor) could afford it and would profit from the operation if they live in Scandinavia/Germany/Austria/France.

I have a good enough tax regime where I live in Central Europe - for 2022 I paid 8% including income tax, health and social insurance. But I'd definitely consider doing this if it was over 20%.