RAW, Since Force is it's own Psychic discipline that all models with the Force ability automatically gain, does this automatically disqualify them from Psychic Focus since any other powers they choose will technically have spells from multiple disciplines (whatever they choose + Force?).
ie Eldrad's spear is Force, so he automatically has it. Even if he chooses all 4 regular powers from the Eldar book, he doesn't count as getting Psychic Focus bonus (ie Primaris - Guide - for free) since he technically has one power ("Force") from the Force discipline?