Because there’s no better way to bond than a good brawl.
Online multiplayer games are doing well. Really well, actually. They can match you with a bunch of other players of similar skill within minutes, and set you up to compete. And I think that’s precisely why they’re so successful. Even in casual gameplay, you get to butt heads with real people. And there’s nothing more engaging than that!
I’m not at all surprised to see that doubling down on that competitive aspect gets well-received. Things like setting up tournaments for players to participate in, mimicking the structure of official competitive play… Build it, and driven players will come. They will want to test their mettle in the best way you can provide.
So basically, make sure primal human nature can shine through in your product.