Not many people go on to play the violin professionally. However, there are positions for that. There is also the opportunity to teach music to kids and others. I went to see a Cirque De Soleil show in Las Vegas last year. The music was played by an orchestra live. There are jobs for people who are serious about their love of arts. Granted the starving artist thing is real. The success of your child depends on the same thing all success depends on: determination and resiliency. How sad would it have been if Mozart was told he had to be a banker? Let your child live their life you never know what could happen.