Content is King ??

Like many Internet businesspeople delivered by even the experts, that the owner of the website "content is  king". But for me the first is the "visitor (traffic) is king". Why is that?

have been very clear with the number of visitors then your website will be more known, having known then what will become of our website content easily accessible to many people. So what's in our content accessible to more people?
One important thing is for sure is that we can set a trend. So which is more important visitors or content? And he said both are important. But I think we should "strive" is a new visitor then we we learn to create good content.