Gundam Evolution trailer delivers 6v6 PvP FPS action at last: What took so long?

Over the past decade, Esports exploded and games like Overwatch and DOTA 2 sat at the center of high-end spectator-friendly action. PvP games of all sorts have been popular since the internet made it possible to play with friends from home, and since the dawn of the mech, folks around the world have dreamt of commanding their own battle bot. What's taken Bandai Namco so long to put all the pieces together?