Electric cars are not something I'm interested in owning at the price Tesla is asking. Or even half what Tesla is asking.
Utility electricity works fine for me, is a small fraction of my monthly budget, and is reliable. I.e. something I never really worry about. Payments for and maintenance of a personal PV system do not interest me.
Space travel? Again if he wants to spend his money there, fine. But I don't see it changing my life.
I am not an entrenched encumbent either. I just drive cheap, old cars and have no interest in visiting Mars. I don't even care for conventional air travel.