You can't stop the free market. Once it's out of the bag, given a long enough time-frame without volatility (technological innovation/political turbulence/labor/etc.) it always returns to feudalism. Sand aggregates into the form of a pyramid in the absence of winds. So do societies.
>>popcal+(OP)
For the love of god, please learn what feudalism actually is. It isn't someone renting out land it is a government structured via a system of sworn allegiances.