In any case, I'm not blaming atonalism "for turning away" my "potential audience", and I'm with the many people who see it as mostly irrelevant (except when the government taxes us to fund grants for atonal music, and except when reddit music-theory mods censor me for not liking atonal music).
I understand there are atonal composers who are able to compose tonally, but I still believe that is an exception, not the norm.
I don't know how you mean "classical music" above. Orchestral music is important to movie-goers, whether they realize it or not. Without their orchestral soundtracks, I doubt Star Wars, Titanic, and countless other movies would have had the same appeal. Producers, I think on behalf of the people watching movies, are paying real big money for tonal soundtracks, and rarely atonal.
Tonal dance anthems.