1) Patronage 101 is rewarding the parent through doing favours for the child.
2) The decisionmaking of a junior person can be manipulated in its own right+
I don't think anyone needs to agree/argue with your point to see how its at best an incomplete understanding of the situation.
The same would be true in ancient rome, mideival florence, or the courts of eurpe in the 18th C.
[+] ... more easily