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.
Musk's brazen [1] use of money will have an impact. Question is how much.
[1] https://apnews.com/article/wisconsin-supreme-court-elon-musk...