These aren't tech startups: these are web startups. Web startups' main value is the experience, but until they have to scale there's not much value there. Early Facebook, from a technology side, is just a CRUD app that anybody could have written. The value was in the timing, execution, and market.

Tesla motors is a technology startup: they're doing something that nobody has done before with technology. Putting something like that in the same categorization as Facebook is an insult to the engineering challenges Tesla faced from day one.

Note: Of course Facebook now has a lot of technology, because they're scaling a website to be used by the entire world, but I'm talking about early-stage startups.