Elon Musk doesn't have to do anything at all. As you said, his money is working in a serious business. And here it takes him a little time and a couple of posts. The crypto community will do the rest for him. Elon Musk will have to take his profit. We've already seen how this happened with DOGE. A great role model.
Elon Musk is great because he can make such a big impact on meme coins like Dogecoin, but you also have to be very wise in understanding this because strategy and politics are clearly in it, and because of that Elon Musk didn't make a Tweet for Bitcoin that was already obviously good, but he switched it to Dogecoin instead.