you seem naive. SpaceX has made it to MI complex status, and US gov will easily bail them out should worst come.
immaterial: "the worst" here is elon destroying the engineering culture & with it their ability to keep improving on what they've done so far. not going bankrupt (by way of a bailout or otherwise) is a necessary condition for avoiding the worst (boeing syndrome), but it's not sufficient
fedgov can pour money into the military industrial complex, but it can't do a whole lot more, and that only goes so far
Knowing that I'm guaranteed enough income to stay minimally solvent does not mean I have no reason to care about losing additional income streams that enable me to have things like vacations and dinners at nice restaurants and digital watches.
Similarly, the relative security of the ~1/3 of Boeing's revenue that comes from government contracts is probably small consolation to its shareholders. They do that business more-or-less at cost; essentially 100% of their profits come from other sources.
Aren't all govt contracts cost plus?
Buying COTS products; probably not.
If you're buying AWS compute through GSA I bet the rate is more than AWS's costs + 10/15%.
Or if you purchase say post-it notes from Staples; I bet they're going to be way more than the cost of paper+glue*1.15.
[1]: https://www.acquisition.gov/far/15.404-4#FAR_15_404_4__d941e...