As the Swedes say, “absolut”. Literature, as you say, is art and not a commodity, and I do empathise with your fear of making your work too commercial. And believe me, I’m certainly not in this for the money.
However, I am confident that you do want someone, or some people, to read your book. The word “publication”, as you can understand from its etymology, is about making something public. We need to package your work so that potential readers understand what it is. This is not about subordinating your work to capitalistic values.
All the best,