Almost anything Elon Musk touches: online payments, reusable rockets, electric (and some day soon autonomous) vehicles, solar panels, underground tunnels.
What’s the evidence for a technological lead in solar panels? That industry has looked pretty competitive recently.
PayPal’s lead in online payments never looked like it had much to do with technology.
I agree for rockets and electric vehicles (and online payments?), but I think the jury is still out on the rest. Give it a few more years and we’ll see whether those efforts bear fruit.