Trump is alpha so he requires that people bow down to him. Given his accomplishments, its a no-brainer for most people but people like Elon and Kanye are accomplished and alpha too so it ends in a clash.
If that’s the case then that’s a really dumb reason. Elon, Ye, and DeSantis would be far better teammates than Oz. And working together would make them even more powerful.
The issue is that Trump wont play second fiddle to anyone. So the other party has to and in rare cases they are not willing to.
Why do you assume that Trump will have to play second fiddle? There is the phenomena of leaders (I hate saying alpha it's gay as fuck) working together for the greater good. No one has to take on a subordinate position.