I don't know how many billionaires support which party, so you may be right. I would be interested in a source. However, I believe there is a difference between donating money to a party and outright buying a vote. Let's see how we all think about it when the Dems start doing it, too.
He will likely dangle hundreds of millions in front of voters across the US to buy their vote without any repercussions.
And then make that money back through the insider dealings that prioritise SpaceX et al.