You are absolutely right because their relationship exists based on benefits and exploitation, not because they have the same goals and mindset… so once the benefits between them are out of balance, breakdown is inevitable.

In fact, this is not the first time Elon and Trump have disagreed, their relationship has been strained in the past. During the 2016 election, Elon criticized Trump and said he was unfit to be president and supported Hillary Clinton. Or in 2017: Musk was a member of Trump's advisory council but withdrew after Trump announced the US withdrawal from the Paris Climate Agreement. Or the 2020 election: Musk also expressed support for Biden over Trump.

It can be said that their relationship was never harmonious, they only came together for their benefit.