ALBAWABA - SpaceX went public with a market valuation of more than $2 trillion, making Musk not just a trillionaire over the weekend, but also richer than the next four billionaires on the Forbes list combined. SpaceX’s debut made it the sixth-largest company in the US as it sold $75 billion in shares to public investors; consequently, it made the unimaginably rich tech mogul Musk even richer as he writes ...