FFXIV just added a lottery and zoning rules, which IMO are the most boring ways to fix it.

Arguably it came with the expected trade-offs zoning laws have in real-life, in that zones intended for their equivalent of guilds are often empty/dead now since there are not that many active guilds, and "legacy" wards that still have personal housing and guild housing intertwined are a lot more active and diverse.

Land value tax, property tax which excludes the building. Forces speculators to pay society equal to the value theyre wasting

Land value tax.