Not really sure what the UFC or commission can do to stop this. I think they would have to change the rulebooks a bit to do so.
Getting a State cornering license is as easy as paying the small fee and every fighter, no matter the promotion, always is granted corner passes whether it be 2-4 people no matter coaching credentials/experience.
As long as all the arrangements are made before hand, you can technically “auction” those few positions off.
The reason they never thought of this is because of the severity of injury that can occur in combat, you would want the wisest people you can trust giving you advice.