We believe a cost effective part of the solution will be Earth Observation data provided by low cost nano-sats and micro-sats. It will take start-ups equivalent to the likes Planet and Spire Global with large constellations, enough satellite coverage to provide high levels of revisit at any point on earth. Maps will be enabled via satellite technologies such as SAR (Synthetic Apeture Radar) that can see ground based detail through clouds and nightfall (currently being developed by start-ups such as Iceye and Capella).