Banksy has created a growing legend around his ideas. Sure, the graphics are phenomenal and the mystery of who Banksy is adds to the buzz, but it would all be meaningless without the ideas behind the work.

If you agree with the content or not is irrelevant. The work is powerful, provocative and simple. The simplicity of his graphic stencils is what allows his ideas to come through so loud and clear. Without the idea, it would just be more street art. He sets himself apart from the crowd with his ideas. These concepts have gotten him global exposure, books and art shows. It's clearly not about him. It can't be, as no one knows who he really is. 

Million dollar marketing budgets, slick websites and celebrity endorsements will never take the place of a great idea. He has recieved all the attention and coverage that any corporation would love to have, all for the price of his own ideas.