I think it's fair to say that right now, mainstream economists don't appear to have anything they agree does work either.

It's useful to know something doesn't work like a proponent would hope, but I don't think it's all that helpful if everything else the economists propose as an alternative, including the status quo, doesn't work either.

If the economists can't find a solution, perhaps it has to fall back to moral imperatives and which values to prioritise. Specifically, which is more important, letting people who have lived somewhere much of their lives stay there, or forcing them out into unfamiliar places with no connections so that new, wealthier people can take their place.