I dont think thats relevant in this case. Games like Dayz dont have an 'end-game', its kind of the point. You fight, you collect stuff, you team-up, you survive. thats what makes it so different. Maybe WarZ is planning a more structured approach with quests and the like, but I doubt there will ever a 'get powerful and kill the big boss - you win!' type scenario.
The bad thing about DayZ is the only things that'll ever kill you are other plays and the retardedly broken fall damage system. DayZ might as well not have zombies...