The early literature on base of the pyramid strategies argued that multinational enterprises can contribute significantly to poverty alleviation of the poorest population in the world. An emergent perspective suggests that the solution to poverty lies within the BOP itself. Here, entrepreneurship within the BOP population is seen as the more credible solution to poverty. In this Special Issue introduction, we briefly present how the literature has further shifted the discussion of BOP strategies toward issues such as innovation, networks, business (...) models, and sustainability at the BOP. This analysis signals a gap in our knowledge related to the success factors in business models of BOP entrepreneurs, with attention to economic, social, and environmental impacts. We present the five articles accepted for publication in this Special Issue, of which three contribute to our knowledge of BOP business models and two to our knowledge of sustainability at the BOP. In conclusion, we propose several avenues for future research. (shrink)