#3 Vince McMahon
As told by ex WWE employees Tom Prichard and Jim Cornette, Vince McMahon is not the biggest fan of tag team wrestling. While he doesn't hate it outright, he doesn't believe that they hold the same value or can feature them in the main event.
Moreover, Vince McMahon is more likely to break up the team if he believes that one of them can become a great WWE superstar. Shawn Michaels is one that comes to mind. But he doesn't have the same fondness for WWE tag teams as he once did.
According to Jim Cornette,
He just doesn't care..to be quite honest...He just has convinced himself that he wants everybody to be an individual name..and they keep setting tag teams up...but if you notice...everytime ...a tag team really gets over....one of the guys gets over more than the other one and then boom...he makes them a single
In a sense, Vince McMahon doesn't see a financial incentive to invest in Tag Team Wrestling. The Usos are brothers and a team. It would be hard to see one survive without the other. It provides another reason for them to jump ship to AEW where they could really shine.