You don't hear stories about Elon Musk shafting his friends and acquaintances, stringing them along and stealing their ideas.

Apparently Musk was a bit of a jerk when x.com merged with PayPal, and is supposedly difficult to work for even today (he works 100 hour weeks, probably demands the same high standards of his employees as he does of himself), but there's none of the skeletons in the closet with Musk as there is with Zuckerberg.

Plus there's the fact that Musk is tackling really difficult problems like online payments (fraud), mass-producing electric vehicles, making solar installations viable and aiming to make humans a multi-planetary species. Zuckerberg just created the latest social fad, IMO which is now in the process of self-destructing.

Did you not read about his divorce?

Neither Tesla nor SpaceX rely on millions of fickle web users handing over their personal information and regularly signing in to a website to look at photos and status updates. Nor can they be easily replicated by a competitor who is not a jackass.

Apparently neither can Facebook, if recent attempts are any indication.

Replicated is the wrong word. Superceded is maybe a bit better. Never say never my friend. These things take time.

I see. You get to baldly assert that SpaceX and Tesla are hard to copy, though few have yet tried, but when I point out that people have tried and failed to beat Facebook at their game, these things take time?