My upstairs neighbors seem to like clog dancing at 2am. What would you do?
1 point
In other words, my answer to OP’s question is “lobby for improvements to building codes so that all multifamily housing is required to be decently soundproofed.”
(I live in a single-family house myself, but I’m not so naive as to think that the zoning laws that led to such an oversupply of houses/undersupply of dense multifamily housing are either equitable or sustainable.)