Feudalism is an pre-industrial, primarily agrarian system of socioeconomic relations in which peasants farm land controlled by nobility in exchange for military protections.
In Feudalism, the single incentive for the nobility to protect the peasant is the exchange value of the product of the peasant’s labor. Feudalism is best known for it’s lack of democratic relations.
Don’t understand its connection to your grandparent comment
He is comparing the society in USA where many people work hard for very few rich people which in return offer charity to feudal societies.