Should this really be a surprise to anyone though? Dude's going to live comfortably(to say the least) regardless if Bitcoin exists or not, whereas his companies are what gives him all the funds he needs in his lifetime.
The bitcoin people who follow him thinks otherwise because they find Elon as a technological innovator and revolutionary but not as a businessman which is his true colors in all the three that I have mentioned. The title actually is a no-brainer, if you are a businessman, you don't care about the other money makers unless you make a benefit in them or they protect your interest or you are going to buy them.