That older-than-USA money exists, but it is still a minority: 80% of inherited fortunes in Europe were younger than four generations (120-ish years).

https://www.famcap.com/2016/05/2016-5-17-wealthspike-europe-...

Edit: there has also been the absolutism movement which effectively removed control from large fractions of lower nobility over their lands, requiring them to be in the royal palace. There was also the german mediatization at the start of the 19th century where the holdings of lower noble families got integrated into larger units. Those larger units, as well as their holdings, then got turned into democracies in the 20th century.