On longevity+userbase I think Minecraft and Roblox might have both beat. Both are 15+ years old, with enormous userbases, crucially their userbases include huge numbers of kids.
WoW and Counterstrike have large loyal fanbases, but I'd be surprised if the age of the average user didn't increase by around 1 year per year.
Exactly - a very successful business can be had serving an existing group of customers for life, but eventually it will die out if new blood isn’t entering. Perhaps the only new kids playing WoW are literally children of people who met in the game …
WoW and Counterstrike have large loyal fanbases, but I'd be surprised if the age of the average user didn't increase by around 1 year per year.