One could always tax land ownership. It cannot be hidden or escaped from. It's also the ultimate scarce resource and yet there are landlords who do nothing just draw rent from those who actually utilize the land.
An addendum re the UK: it's funny how the UK tax scheme is so punitive on the middle class. Earn 100k pounds gross and take home 50k. But the moment you become an asset owner, you can basically optimize all of it away. The two income brackets "supported" by the UK tax regime are the poorest and the richest.
An addendum re the UK: it's funny how the UK tax scheme is so punitive on the middle class. Earn 100k pounds gross and take home 50k. But the moment you become an asset owner, you can basically optimize all of it away. The two income brackets "supported" by the UK tax regime are the poorest and the richest.