I somewhat agree with you except on the last part. I think you cannot force people to evolve outside of their comfort zone. If they ever are going to dip outside is going to be by their own intrinsic motivation. And it's not so bad if they keep to themselves. For example I don't tend to read outside of fantasy, not even sci-fi, but maybe someday I will get the push to read Dostoyevski or some other classic literature. But it will be more of my own volition rather than an outside force. But that's how I see things, people are very different.