Successful musicians have way more in common with actors than any other profession. It’s about connections, wealth, and nepotism over anything else.
Let’s say your child wants to be an actor. One way to make this happen is to be a successful actor yourself - require your children to be cast in the film in return for you starring. This is how famous acting families pushed their kids forwards, including Nicholas Cage (Coppola) and Jeff Bridges.
More relevant for HN is rich people. So you are tech rich and your kid wants to act. Fund the movie on the condition your child acts in it. That is the way since movies began.