News : "Jon Stewart joins Twitter and defends the Redditors"
Guess where the party is running right now. It's in Twitter. Yes things have cooled down to frozen level after Trump ban, but other open platforms are miles behind before catching up to the level of FB or Twitter.
The catch is in being cheap in serving pages so that it can scale up without increasing cost. And then being fast so that pages are responsive enough to be useful. Ensuring those take time and effort which others haven't yet catch up with.