Bordieu's bestsellers: art?

Today's quote comes from one of my top theorists:

Bourdieu argues that labeling some work commercial and some noncommercial (or serious literature), a dichotomy that characterizes so much discussion of books and publishing, is an important strategy for marking the differences between the high and the popular aesthetic.
The opposition between the "commercial" and the "non-commercial"
appears everywhere. It is the generative principle of most of the judgements which, in the theatre, cinema, painting, or literature, claim to establish the frontier between what is and is not art. (138)
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Haugland, Ann. “The Crack in the Old Canon : Culture and Commerce in Children’s Books.” The Lion and the Unicorn 18.1 (1994) : 48-59. Print.

It's important to consider that after all, this endless discussion about what is art is fueled by how valuable the work is for market that stablished it as a representation or product of its high culture.

How can I write a thesis in marketing in the publishing industry without steping into the mud of the definition of art?
This is getting way too complex...