Palantir's goal is to make a data monopoly. This is laid out quite plainly in Peter Thiel's book 0 to 1. As he said: "Competition is for suckers.". This is also pushed internally (I worked for Palantir as an FDE or "delta").

The financial purpose is to create a J curve with income. Lose a bit or money first, then charge monopoly prices.

I don't like Palantir at all. Anecdote: I got drugged without consent _twice_ while employed there. The first time was minor but the second time hurt me and I'm still hurt from it. I can only guess but I think I got dosed with a large amount of Adderal or meth. I quit after that. I wanted to get authorities involved, but Palantir contracted for them, so I didn't out of fear.

This being said, if you're a UK employee and think this is a good idea: you're about to get screwed out of a lot of money long term. And you won't be able to leave because Palantir's tactic is to be as sticky as possible.