[usrusr]

"It's probably in the nature of land-owning for this to happen: someone ends up with all of it, then can't maintain it, and it ends up being sold off or dispensed to the state, then sold off, reaccumulated, and the circle continues."

Realistically, once someone owns everything, they'd never ever have to sell. Because they could just rent it out temporarily for the same price. Demand isn't that flexible and in absence of other sellers, where else would a would-be buyer take their money?