Curious to know what is achievable as an Entrepreneur and a Pianist

Hey everyone, basically what the title says.

I am an entrepreneur trying to build a business, but also a pianist on the side. I have tackled advanced repertoire like Mozart Sonata No. 15 in F, Chopin Ballade No. 1, etc. but nowadays I constantly find myself short on time to do new repertoire and maintain my previous pieces.

I am curious how people with a day job manage to do this and even thrive. I have seen countless instances where people are playing the pieces I could only imagine to play and also having a stable source of income from jobs in a completely different industry.

How are people sustaining it? Is it even the norm or are these people outliers?

How can I do the same?