Companies typically did not like Jim Crow laws. They cost money that ate into the profits. The railroad companies had to add another car even if only one black passenger purchased a ticket for a train. Moreover, if the white cars were full, white passengers could not simply ride with black passengers as the segregation laws prohibited that too. A white man discovered riding in a car reserved for blacks faced the same criminal penalties as did Plessy. Why didn’t white people ride in the same train cars as black people, according to the passage?