Yeah, implementing policies like this has to be done really damn carefully to prevent unintended consequences from dragging the whole thing down. It’s also not a push-button solution to a problem; it requires persistent, long-term commitment and gradually change to get right. Tricky, especially when, at least here in the US, regressive politicians regularly get elected and scuttle policies that would eventually work if left alone.
Anyway, yeah, just focusing on a land-value tax alone won’t solve the problem of equitable housing. It’ll have to be worked in carefully with safeguards to prevent the 1% from abusing it, that prevent public green spaces from disappearing into the concrete jungle, that ensures we have space to build and improve public transit, infrastructure , etc.
For example, single family home zoning on large (7000+ sq ft) lots isn’t appropriate major cities. It’s reasonable to expect people to compromise away from that type of housing into smaller lots and mixed-use zoning, so that SFH’s can exist in small spaces but be surrounded by businesses and apartments. But, if a small single family home or an apartment wants to work in a small garden or share a public garden, I think those types of things should be protected and, at least if they’re public access, exempted from land use tax to a certain point.
We of course have to be careful not to allow loopholes that enable people to exploit that and keep inappropriate amounts of land to themselves without paying dearly for it. But we also need provisions for that kind of land use to exist without it being so expensive that only the wealthy have it, or that horrific things like HOAs are the only ones able to afford them.
It’s a mess. I’m glad though that they’re trying it out. Just putting the idea off because it’s hard will keep things worse forever.