They've got a better image, they get graduates for cheaper, oversell the future IPO and make them work longer hours.
It's no secret that Palantir is a sweat shop filled with "Forward Deployed Engineer", a bullshit title to make people feel important and impress graduates (it does work!).
The sad reality of consulting shop: You are sent from client to client anywhere anytime (the "forward deployed"). Your company takes a big cut on your salary, and they benefit by paying you less while charging more for you.