At this point the AI labs would pretty much have to form an illegal price fixing cartel in order to jack the prices up, they've been competing to drive down prices for so long.
They'd have to get the Chinese AI labs to go along with that price fixing too.
They’d have an entire country of geniuses prepared to defend against the antitrust allegations, who’s to stop them? /s
You don't need collusion, just the VC money drying up. Economic reality will set the base price.