A return to feudalism

In feudal times, the serf I am told had to work two days on the land of their lord and had the rest of week for their own land.  We have a similar situation now in the UK where some people have to give the proceeds of 2 out of the 5 days they work in housing costs.  At the same time - a new breed of 'Buy too let Barons' - have property empires of tens, and in some cases hundreds and thousands of properties.    I am sure being a responsible landlord involves more than just collecting rent each month, but most of us might think it's hardly the toughest way  to get money.   Of course there are some awful tennants who can make the lives of landlords a misery and trash much love properties - but on the whole I wonder if a property owning democracy would be better is we had a maximum number of properties one person can own? Just a thought.