When a girl or boy earns good money, independent and major, parents cant order them or control them or even advise them. The girl or boy think that their parents are old fashioned control freaks and they dont have any idea about love. As they are no more dependent on parents, the boy or girl start questioning parent's rights to tell them what to do and what not to do. They resent interference. They will not even allow them to live with them and traditional parents will be ashamed to live with their children if they are into live in relationship. Even progressive parents are not comfortable with this.
I have seen many cases where the parents just stopped interfering and most of them readily helped their kids when they were in soup. Afterall it is their children and they have brought them into this cruel world and they will be responsible for them even if their wards stop listening to them. Unconditional love from parents. When these rebellious children themselves become parents, then they will realise what their own parents underwent. This is a circle. Sometimes kids comeback realising their mistakes. Sometimes they dont.
There are selfish parents who push their children into show business without realising the consequences. They are lured by money and glamour. Sometimes their gamble pays off and sometimes they land in deep trouble.