There should be disincentives against hoarding resources

Is it not better to share the land in a more even way?

If we are owed (a minimum amount of) land, if (we assume) there is more than enough for everyone, then to purchase land from someone who has very little places the burden to replace this onto others. If we are owed land and it is possible to sell that land then it is easy to have a perpetual income from selling what we are given, each time. If only people who have above an established maximum are forced to give up their land in such circumstances then this does not result in a perpetual income, when everyone is below the threshold; you are no longer owed land since no one has more than is acceptable.

If land is always owned by someone (no land is Government owned) then a property cap, or Land Value Tax, would ensure that land is generally available at a reasonable price.

If we are not owed land then restraints, disincentives on (excessive) land ownership will result in the availability of land at reasonable prices, for those that have no land. A disincentive to hoard a large quantity of property will result in more efficient use of resources.