It's not just Italy where this is true: as found by the study "Trajectories of Aristocratic Wealth, 1858–2018", the same is true of Britain There, the old Anglo-Norman landed elite has managed to hold on to much of its wealth despite decades of onerous death and income taxes, while the new money plutocracy has fallen off and has very much not been able to hold onto its wealth In fact, though the old peerage families were overshadowed by the plutocratic types for much of the twentieth century--namely industrial families at the start and banking/media families for much of the rest--they're back to being the wealthiest group in the United Kingdom, if they ever lost that title to begin with Why? Well, to some extent it's that those that are still around at this point have the "good with money gene" and have mixed with other families that do, which helps. But it is more than that, I think: they have family missions. Holding onto the country seat and holding onto the core acreage are their paramount goals, and they are willing to work very hard to make that happen by whatever means they can It helps too that they held onto acres instead of bonds when the postwar inflation came, as that knocked out groups like the WASPs that held their wealth primarily in fixed-income bonds, which was wiped out over the Depression, WWII, and post-war inflationary period. Those acres are now quite valueable...though adjusted for inflation, worth no more than they were in 1900, about 4 ounces of gold per prime growing acre The Grosvenors pride themselves on being able to look a century into the future, and make financial decisions based on that. Their rootedness, sense of place, and sense of family preservation (they are Normans who have been in Chester since the Conquest) gives them the ability to do it, and so they move their means around as necessary to account for that. Aristocrats by Robert Lacey has a great section on this There is much we can learn from this class of surviving landed elites, as @JohannKurtz writes about so well in Leaving a Legacy

White people are on the verge of extinction Global population of white people: 100 years ago roughly 35% 50 years ago 20% 25 years ago 15% Today just 8% White people are the minorities and must take their countries back. No more suicidal tolerance. No more suicidal empathy We should not be talking about importing foreigners to “assimilate” we should be allowed to have countries that belong to us and our culture