You have a hyper-idealized version of what is and is not art.

And execution definitely forms part of the talent. We should know that just as well. We all know "the idea guy", the guy who has all the "right" ideas, but just can't seem to actually do the thing required to bring the idea to life.

And that's because most ideas are just half-formed thoughts. I'm almost on the other end of the spectrum. It's mostly about execution and the idea actually means very little. The idea of "what if you couldn't make new memories" is the central struggle in two very different movies. In Memento, it's used to tell a detective noir story where we're told who the killer is in the first scene. In 50 First Dates, it's used to give Adam Sandler a hurdle to plowing Drew Barrymore.

And you can find joy in the doing itself. You can make good commercial art. It is possible. There is craft there. And where there is craft, there is art.