NASA is the one making those Moon/Mars missions actually happen. Companies like SpaceX or Blue Origin are just vendors that help NASA to have greater flexibilit

NASA is the one making those Moon/Mars missions actually happen. Companies like SpaceX or Blue Origin are just vendors that help NASA to have greater flexibility and do more with less. It's the same reason your company is able to move faster by leveraging pre-built solutions like Stripe/Twilio/Okta/etc. instead of re-building every one of those services in-house.