A contention that oligarchic power is rooted in the ownership and control of land has been amply vindicated by the response of oligarchic power ...
This all started in Tudor times, when good public land was taken by the rich and powerful, leaving only poor-quality patches (called 'commons') for the hoi polloi. The process is called 'enclosure'.
Enclosure continues to this day, but no longer with land. Nowadays it's called 'privatisation'. Public property is taken and distributed to the wealthy. A token sop may be given to the ordinary people. But, at root, it is theft.
The most egregious example in recent years has been the privatisation of the Royal Mail.
These processes have had a profound impact on British society. They are at the root of the class system, today's massive inequalities, poverty and deprivation.
And these processes are one of the factors that has led to Brexit. The government and oligarchs have very cleverly blamed the EU for all of these.
And the generally poorly-educated public, distracted by TV, celebs, gambling, etc. (Read Aldous Huxley or George Orwell) have believed them.