> The questions are how much resistance is there in the labor force, and how does that impact the ability to recruit talent?

Easy: Give potential employees similar salaries to MAMAA companies, and a similar amount of freedom and independence (at least in the ways in which it is possible at a defense company) as it existed in the early days of Google and Facebook, and I think a lot of potential employees (though of course not all, but this is not necessary) will "forget" their initial moral objections and go for the money. :-)