I would posit that familial generational wealth tends to create progressives though. The 4th generation farm owner is never going to be as as hardened and defensive as the great grandfather who built it all from scratch.

There's an inbuilt solution to that though, a fool and his money are easily parted.

There's very few dynastic families that successfully keep their money. There's probably millions of people that create a fortune for their family, but how many families keep that by the 4th generation?