It's no big secret the booking system gives privilege to "commercial operators". The evidence has been there for years now, despite SP refuting that. Once.
There is the normal high-up block-reservation at head office, if you have a licensed operator number, prior to public bookings, and then smaller adjustments regarding camps closer to the time, using any "means" at your disposal. (Regarding Kruger)
Maybe SP has forgotten that that has been spotted?

Please check Needs Attention pre-booking: https://africawild-forum.com/viewtopic.php?f=322&t=596