Musk championed a larger systemic vision, a vision for a bottom-up emergent order of other interested parties-whether companies, individuals, or governments-to utilize the new and radically lower-cost transport infrastructure to build up a sustainable human civilization on Mars, potentially, on numerous other locations around the Solar System, by innovating and meeting the demand that such a growing venture would occasion.
I would start with second part in bold. The first part I guess just mean a group (="order") of client for Musk's companies (government, individuals...). "Bottom up emergent", I don't know what it means.
Ok, yeah that is the first part in bold. But the REAL confusion is the second part in bold. First, I understand the "civilizations are built on Mars", but I don't understand they have to add "potentially, on numerous other locations around the Solar System". I guess it would be better if they were to add "and" before "potentially". Because as is, the phrase sounds like those "locations" are on Mars.
Finally, the last part,"by innovating...". I think this describes how Musk champion the vision. By kinda confusing that it's all the way at the end.