Maybe this explains SpaceX ?
Deputy Defense Secretary Patrick M. Shanahan…..
noted that in days gone by, the Defense Department did a lot of research and development that later was leveraged in the private sector. Now, he said, much of the private sector’s research and development can be useful to the Defense Department, leading to a new approach for DoD: “Rip off and deploy.”
Leveraging Private-Sector R&D
“The mindset has always been, ‘We’ll grow it ourselves – it’ll be organic.’” he said. But now, he told the audience, DoD will leverage more things that have already been done in the private sector. “That also gives us a chance to bring new companies, new ideas, and expand the people that we work with in the Department of Defense,” he added.
https:// www
.defense.gov/News/Article/Article/1480128/deputy-secretary-explains-priorities-in-evolving-the-future-force/