Both men are incredibly strong-willed. If their interests clash, could Trump end up kicking Musk out? It wouldn’t be the first time. Remember, former Secretary of State Rex Tillerson found out he was fired through a tweet. So, if Musk’s interests ever conflict with Trump’s, could he face a similar fate?
Elon Musk was never elected to whatever position he is and will be occupying in the Trumps government (regime), deep insight, he is being appointed by Trump the United States president just for him Elon) to be among his economist planning jurisdiction.
This could be as a reward of Elon contributed a lot to Trumps electoral victory and obviously the wealthy influential position of Elon was also and advanced opportunity to be fitted in that political circle.
Having to know the possession of holding a World governance are Trump and a single entity of world economist and an entrepreneur as Elon is a different thing which means Trump has the potential to crimple Elon's potential influence as well better position to kick him out of his cabinet in the United States governing council.
I will stop here and will not get to emphasize on what would make Trump take such action but he assured that Trump has the potential power to take such action to step Elon aside from his appointment because he was not elected.