Just sayin that if pros are how we measure ourselves? Then do what they do. And that goal is attainable. Even if ya don't become famous for it.
I wouldn't take issue with anything you say here. It goes without saying that everyone's personal experiences are different.
I began my life as a musician in the academic, "professional" world. My school had a great music program. So that meant auditions for first chair, solos, District, Regional, State Band and Chorus, all that stuff. And guess what. Despite living, breathing, and dreaming music as a teenager, I
never, and I mean not once, passed an audition. I put in the work, I went the extra mile, I was a leader. Didn't matter. Never made first chair, never made any of those higher level ensembles, never got the solo. Even failed my college entrance audition. I used a loophole and the generosity of the professor leading the trombone studio to sneak in the side door and pursue my music degree.
If that was the only experience I had in music, I would have given it up fifteen years ago. I couldn't get past the stage fright, the performance anxiety. As soon as you told me I was being judged/graded, I froze up. Choked. You'd think I just started playing last week. But in the context of the entire trombone ensemble, I could sight-read better than the fourth year star players.
I picked up bass along the way, and eventually I learned that you could, like, actually
make music without having someone conduct you or show you a sheet of music. I didn't really learn this lesson until well into my college career. After years and years of failure, I learned that I could make music without being judged.
So I started playing bass more. Started bands, played gigs in empty rooms and basement parties, and got used to being uncomfortable on stage. Eventually I shook off that performance anxiety and gained the confidence I have as a musician.
If I hadn't stepped out of the "professional" world when I did, I would have left it all behind. Now, I've built myself back up there again. I take my music seriously, I treat it as a job, and I am a professional in every sense of the word. But I guess my short rebuttal to your story is that the snowball effect can be extremely gratifying. Have fun first, and that will motivate you to spend more time on your craft. Which will pay off and help it all grow.
Different strokes for different folks, to be sure. Hopefully my story helps someone.