There are no permanent friends or enemies, only permanent interests. I think this is not only true for politics but also for us, the common people. We always pride ourselves on being good people and wouldn't betray our friends or loved ones for money or power...but that's because we've never seen a large enough amount of money or a big enough benefit. If we have a billion dollar deal, we become millionaires and fully powerful. It would be difficult to know what decision we would make at that point.
Because human nature is greedy, selfish and jealous.
Politicians and we are all the same, we are all human.
I was really surprised how everything escalated so quickly between the two, they were tight friends but my inner mind told me that one thing or another will happen but I wasn't really ready for this quick one not even up to a year. One thing I have realized about politics is that you have to be ready to compromise without any emotions and it's obvious that Elon isn't the type that is ready for such and perhaps he is seeing that the administration is not doing as his vision from the beginning.
Another thing I'm curious that might has happen could be the cabals. What we see outside isn't what is really happening behind. The presidency is a group of people that has common goals together, they decide what happens and what they don't like, if they see that Elon Musk has become a tool of attention or doing what they don't like, they can call the attention of Trump to get rid of him as soon as possible and he don't dare say no to such people because they are the reasons behind his success to the presidency and not the things we see talk about on the outside.