Land hasn't changed, but the right to own it certainly did. In the late roman republic state owned some land but most of it was owned by large estates of slave

Land hasn't changed, but the right to own it certainly did. In the late roman republic state owned some land but most of it was owned by large estates of slave owners. And working the land or being in the military was mostly the only way to make a living. So land was a much more important commodity, therefore I don't think you can't compare it reasonably with today.