It's likely that the first major industry related to space will be satellite-based communications and Earth observation. The potential for satellite technology to revolutionize global communication and data gathering has already been demonstrated, with companies like SpaceX and OneWeb launching constellations of satellites to provide internet connectivity and telecommunication services worldwide.
These industries are poised to grow rapidly as the cost of launches decreases and technology advances, enabling more small satellites to be launched into space. Furthermore, satellite-based Earth observation is becoming increasingly important for industries such as agriculture, logistics, and environmental monitoring.