Am I greedy to want to keep what I produced? Maybe the ones who want to seize the products of my labor the ones who are greedy. Are you hoarding if you grow it and can it or freeze it or dry it? No, but any weak excuse will do for the left to institute their programs. (Is it not slavery for one man to force another to work without compensation??)
Medieval economic theory is an interesting worldview. Not one that makes sense today.
For produce, the assumption was the Lord owned it, but he owed the farmers a living. Charity was required, but if you were not working you could be seized and MADE to work.
If a rich man had a store of food during a famine, he was expected to feed his subjects with it. Or be killed.
Again, it was a very different system. Responsibilities up and down the chain.
So if you, as a private person, with your own hands, built up a store of food from your own land, you were not required by law to share. But you could find yourself kicked out of church (which brought all sorts of legal issues).
You are greedy and selfish.
It is your civic duty to report to the Soylent Green factory immediately!