Basement Whatever

You could put higher consumption taxes on items the wealthy purchase to a disproportionate degree.  Paintings and yachts, and so on.  Tom Holden argues: “In a world in which capital is essentially the only input to production, taxing capital reduces the growth rate of the economy. Whereas at present capital taxes have only level effects. So if anything, capital taxes will become less desirable as the labour share falls.”
— Read on marginalrevolution.com/marginalrevolution/2026/01/taxation-in-a-strong-ai-world.html