I think SpaceX already has too much of a head start, and will have even more in the coming years. Just by saying that it belongs to the richest man in the world I think we can already draw the conclusions... Besides the vision that Elon Musk has is incredible, he wants to do a lot of innovative things and that will take SpaceX and his other companies to the top.
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They may have a head start but they are no where near complete. There are plenty of things that need to be done before it is completely ready so the other companies still have a decent chance if they analyze the results of Tesla's launches.
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