Is SpaceX profit margin on these contracts similar to that of their private contracts? Did SpaceX secure these contracts before having an actual product ready?

Is SpaceX profit margin on these contracts similar to that of their private contracts? Did SpaceX secure these contracts before having an actual product ready? Were these contracts available for any actor, or just American actors? Did NASA offer these contracts to the best offer, or to multiple companies? The answer is, pretty obviously, that NASA's contracts aim in part to secure a well-fed American space companies, and that they alone are enough to pay for SpaceX development costs, as they would for Ariane. I do think NASA funding is a good thing, but pretending SpaceX doesn't tap that manna is disingenuous.