When you think that the Norman successors still own the vast majority of England to this day, cramming the Anglo-Saxons into rabbit hutches on high density estates, very.
Based on what - that some of the aristocracy have French/Norman sounding names? A lot don't.
Nearly a thousand years of interbreeding insures that the genes have been well and truly intermixed by now. I have no idea if my ancestors were orginally saxon, norman or something else. And I expect that it true of 99% of other people in the UK.
Surely the alternative would have been that land being owned the Anglo-Danish elite installed by Cnut a few decades earlier, or perhaps a newly installed Norwegian elite had Harold lost at Stamford Bridge.
Britain's ownership inequality is probably more a result of the tradition of primogeniture where aristocratic land holdings remained concentrated whereas in France they were subdivided on inheritance.
I blame Britain's tiny homes on our early industrialisation creating terraced houses which have subsequently been difficult to redevelop at higher density. Other countries seem to have skipped that and instead built tenements that eventually turned into flats at a much higher floor area per land area.