I've never used Facebook but isn't its success mostly being "at the right place at the right time"? There were social networks before it and I'm not really sure

I've never used Facebook but isn't its success mostly being "at the right place at the right time"? There were social networks before it and I'm not really sure what's so unique and revolutionary about Facebook. I think the main differentiating factor over something like MySpace was the use of real names and the more "adult" interface which lined up with the complete "mainstreamification" of the internet in the 2nd half of the 2000's. As a thought experiment do you think that in an alternative universe where Zuckerberg doesn't exist there's no social networks? People started using Orkut, MySpace and friends then around 2008 decided "nah, this is silly" then went back to ICQ and sending emails?