If one has gained the experience in performing under pressure in childhood then it’s almost certain that one can draw on these experiences in adulthood in all fields where they might be thrust into pressurised working environments, difficult meetings or job interviews, and a whole compendium of other situations where one has to perform as an individual ‘live’ person to person.
In conclusion, although there can only a few world champion performers in the concert hall, everyone can be a successful performer in the fields of business, politics, law and public speaking.
If I was looking for someone to deliver a sales pitch to a big corporation to make a high-pressured business deal, I would consider picking the musician over the mathematician because they would have the social skills to perform, make long lasting interpersonal connections and ultimately, from learning to play and perform in childhood, will be succesful under pressure.
Keep on performing, students!