@matthew answer with another question... how long did twitter or Facebook take to "catch on"? I feel that it's infrastructure more than social network. It's possible it is defined by different goals and metrics in the long run.
Agree. All that's needed is a few celebrities (Lady Gaga for Twitter, DJ Khaled for Snapchat) to make Mastodon more mainstream for the non-nerds -- at the moment, this has nothing special over Twitter if you talk to the wider circles @booc0mtaco