> SpaceX could rise to be a major winner that makes people a lot of money

Based on "sane"/traditional metrics that and much more is already priced in into the IPO valuation.

e.g. Google had a many times lower P/S ratio at their IPO and was actually profitable (and software companies usually have higher valuations than capital intensive ones like SpaceX anyway). SpaceX is already valued at more than Google was 10 years after its IPO while barely making a tiny fraction of its revenue.