You can try and become a Composition Lecturer and get pieces played and performed on the side.
Very arguable. I know people who are only writing music because they know people, and there circle of friends are all into the same music and are 'coincidentally' all on the music panel for government grants giving each other free government money for nothing. Having a personality that is marketable, meaning not normal can also help. Fake, and crap but welcome to capitalism.