Base of the pyramid (BoP) theory was posited in 2002, as a revolutionary method to combine profit and purpose. In this paper the concept of BoP is explored by delving into the development of the idea. Understanding the successes and failures of each iteration provides the opportunity to coalesce the efficacy of BoP. This leads into a dissemination of elements of successful BoP implementations. These elements establish concepts that are vital to any semblance of BoP success. Case studies then develop the complexity and nuance of BoP implementation; establishing there is no cookie-cutter formula for success. Ultimately, base of the pyramid emerges as a much more deeply complicated concept than originally suggested. Despite the ambiguity of BoP, the theory continues to be one of the most viable opportunities for correcting the inequalities of the world.