> while a natural desire

Or look at monarchies and titles of nobility. In the past direct inheritance of political assets was common, and acting on that natural desire, the people involve claimed that parents deserved to direct what they (and their ancestors) had accumulated on to the next generation of their own family.

Yet nowadays most countries and people have decided it is immoral, and they also took steps to make common forms of it extremely illegal.

My point is that economic inheritance today is just as much a social-construct as political inheritance was then. It exists because we permit it to exist, don't be fooled by anyone claiming it's an intrinsic law of the universe or a divine mandate by god that must be obeyed.