Isn't that a sell out? A professional who takes direction and works on someone else's project?
Actors work with people called directors. They all work on projects that they don't fully own. They outright compete for the chance to do so. Are all actors "sell outs"?
Most professionals (artistic or otherwise) on the planet take direction and work on someone else's project. Because "professional" means "someone who makes a living at something." And making a living generally requires doing a specific thing that has enough value that others will pay enough for it for you to live on.
Maybe you get lucky, and your own personal ideas that you can manage to execute on your own just happen to align with the public, or some small number of very wealthy patrons, such that you are paid for doing whatever you darned well feel like. But that is being lucky.
There's this myth that an artist must be so independent that they risk destitution - but how much art can you make it you cannot feed yourself? That's a self-limiting approach to creativity. Art is communication - all effective communication takes the audience into account. An artist working at the direction of another just has someone else responsible for knowing the audience.