But no, I really doubt that's all it takes. Unless you discount all of the R&D costs as SpaceX operational expenses.
Government crew and supply launch contracts probably, though these don't need to be "profitable" in the conventional sense for the entity footing the bill.
All that's needed to be profitable for the launch provider is to convince Congress that it's in America's interest to establish a public-private project for a moon base and a Mars base. Now more than ever, when framed against a background of an ascendant Chinese Space program that will soon be sole operator of a space station.
Once the "Race to Mars" is won, NASA can grow soy-beans, do bone density studies, and any other science shit the NASA nerds can come up with post-hoc, but the main point will just be being there, and having the Stars and Stripes on the first flagpole planted in Martian soil.
(if you haven't played Bioshock this probably wont make much sense - but if you have and listened to all the audiologs, i'm sure you'll find a bunch of parallels)
