With the exception of the rare Fuzzies every human being in the Galaxy has a Psychic Power.
Psychic Powers come in three broad varieties
Minor Psychic Powers are free but not particularly powerful ranging from the classic fireballs and lightning bolts to more subtle abilities like Compel.
Allegiance Psychic Powers are unique to each Allegiance and are quite potent, hence they cost extra.
The same is true of Occupation Psychic Powers available to those with specific Occupation Features.
The choice is between a risky but useful back up or a potent and destructive ability that will likely determine the strategic worth of the Warrior to her fellows.