Human romance can be tricky. Even such a successful and highly regarded person, such as Elon Musk, has trouble finding the right mate. In this long and detailed interview in Rolling Stone (that I admit I haven't read all the way to the end) are some telling things about Musk's personal life.
From article, in one part, Musk discusses the breakup for a few more minutes, then asks, earnestly, deadpan, "Is there anybody you think I should date? It's so hard for me to even meet people." He swallows and clarifies, stammering softly, "I'm looking for a long-term relationship. I'm not looking for a one-night stand. I'm looking for a serious companion or soulmate, that kind of thing."
In another part, The New York Times has called Musk "arguably the most successful and important entrepreneur in the world."
I found this Rolling Stone article from another shorter piece that came up in Yahoo News from Business Insider.
Personally, I sometimes think society's vision of success is a prerequisite to the competitive world of romance, but this is not necessarily so. Success in one area doesn't necessarily imply it in another.
Being a workaholic can distract from human connection, of course.
Also, on a personal note, I must admit that I don't feel lonely most of the time. I'm not in a relationship and I seem to like living by myself. For me, connection to other people is still important tho. Connection to the broader community. This includes my erotic feelings as well which is another whole story. Similar issues apply whether one is talking about straight relationships or gay relationships.