Thus the cliche of wealth being created and lost within 3 generations (although statistics show 70% of the time it's lost within 2).
Businesses aren't the only example of this. It's been true throughout history with great leaders/monarchs. I'm working my way through The People Profiles series on English monarchs (in addition to Dan Jones' books The Plantagenets and Wars of the Roses) and it's fascinating how often a weak king follows a strong one, who's then followed by a strong one, etc.
Great example: Edward I (Longshanks of Braveheart fame) was the son a weak Henry III but from an early age showed himself a great warrior and proved to be a strong kind. His son Edward II was a disaster and was deposed by his wife and her mistress. His son, Edward III, seized power from his mother the queen and her lover when he was 17, and proved to be one of the greatest of all the English/British monarchs. His eldest son and heir predeceased him, so he was followed by his grandson Richard II, who was so awful he was deposed by Henry IV, who then spent his reign putting down rebellions. Then we had a rare situation of 2 strong kings in a row, as Henry V is world famous, but his son Henry VI....... hello Wars of the Roses.
Sorry for the derail, I just find that point really interesting. I think the same holds true for entire generations.