Electric scooters appeal to those who want to move quickly and easily through urban streets at low cost while avoiding congestion and solving first mile / last mile mobility problems. However, menacing clouds - in the form of safety, regulatory and business model issues - linger above the nascent e-scooter sharing market, raising questions about its future. A key question is whether cities can find ways for this new micro-mobility service to add value to sustainable urban mobility. In this article, we explore the e-scooter market and competitive dynamics and offer a perspective on smart city challenges. To learn about the lessons learned from the city perspective regarding the introduction of e-scooter sharing, please read our article E-Scooters: A Collision Between Innovation And Controversy.