Shaitan: The despot will be using the first few land tiles we have on his own propably... he needs units, he needs wealth
As we get more land, the despot will propably give land to his humblest followers to govern it (propably other cities than the capitol, far out provinces etc.). this way ownership will spread with the time.
Ehecatl: the land rush in america was only there because nobody owned the land. the reason was that america skipped all the land-ownerhip methodogy of the ancient and middle aged aeras.
in europe, there was no land rush because the land was divided between the nobles before. as the nobles had to pay more and more for maintaining their land, units and buildings, they were forced to first lent the land away and later sell the land. otherwise we would not have any land ownerships in europe
the land was also often the price people got for loyal followership over generations. with monarchy as tech, the nobles will struggle between each other for land. the monarch himself needs not hold the most land.
but with writing this something else arizes:
the despot should not be dependent on land-ownership for unit building or other expenses!
we should have a defined amount of shields / gold / food per land tile in the nation going to the state for maintenance of national troops, which will be under the controll of the leader.
the resources could also be used for other purposes, privately or nationally, like building palaces, monuments, paying assasins...
this way the leader can freely give away land without fearing to be without troops or other ownings.
also:
cities in the middle ages and the ancient times were NOT owned by anybody. people built there and used the resources in a small scale. the ownership of a city is mainly defined by its surroundings or stationed troops inside the city.
as such, the national troops of the leader could be stationed in citites to maintain peace. in any non-staioned city any citizen can call out a revolution and draft troops out of the resources of the city. the leader could moove any unit through any territory within the nation at will without explicit allowance.
and of course he can attack units of his citizens at any time (for example to fight down a revolution or fight another noble who is not loyal enough)