At the risk of stating the obvious, Black Cube is an actual private intelligence firm that sells spy services [1], while Palantir is a software firm that sells software (even if that software is used by intelligence, gov, etc). You can go spin up a free Foundry instance [2] and test it, and it doesn't have secret buttons to imprison people.
[1] https://www.blackcube.com/
[2] https://www.palantir.com/developers/