Style is entirely subjective and impossible to define. Van Gogh had a style. Are we going to say that we would want a society where only Van Gogh is allowed to make Impressionist paintings? Who decides if your painting is similar enough to Van Gogh that it’s illegal? What if your style is simplistic. Are you going to need to compare your art to all published art to make sure a court couldn’t find it “too similar”? What if we make a painting with AI that is a mix of Picasso and Van Gogh? Style?
It’s a stupid concept. It would never work. Even the visualizations we see that are explicitly attempting to copy another artist’s style are often still clearly not exactly the same.