Right but if you're a lifelong gov worker you are probably used to the pay, and it's hard to switch from gov work to startups or big tech (at least, I would see it as a thing to question). Whereas the GGP talks about people switching from the private sector (adtech, etc.) to public.
The first thing they are going to see is the salary and run a mile. That's partly why Palantir 'works'; they pay tech salaries and have a tech culture, but do gov work. Booz Allen et al were less advanced prototypes of that as well.