I think the biggest difference is that Elon has money. Most of the people Trump throws under the bus are people that served a useful function but then stopped fulfilling that function.

Elon’s function is to have money. He bought Twitter and spent hundreds of millions of dollars to elect Trump and Republicans. He threatens to fund primary challengers for any Republican that doesn’t fall in line.

I don’t see that usefulness disappearing anytime soon, no matter how unpopular he is.