Businesses? Most artists have no concept of business. It’s common for artists to have a deep disdain for the economic side of their world.
Those that succeed are usually the ones who take the time to understand and experiment with a variety of business models and monetization types. Micro patronage. Crowdfunding. Art merchandising. Making their art accessible at various price points. Creative partnerships. Dipping into corporate partnerships or publishing. And of course the traditional… art fairs, gallery shows. And the more recent… constant social media, bts videos, mailing lists, events, classes, retreats, etc.
Either that or they’ve got some truly insane unique talent. But I know plenty of insanely talented artists who have such a toxic relationship to money and concepts of value that they will always be starving.
Source: was once a starving artist; still know many starving artists.