Blockbusting fiction is bought as furniture. Unread, it maintains its value. Read, it looks like money wasted. Cunningly, Americans know that books contain a person, and they want the person, not the book.
Novelists are perhaps the last people in the world to be entrusted with opinions. The nature of a novel is that it has no opinions, only the dialectic of contrary views, some of which, all of which, may be untenable and even silly.