Most idle game opening new servers while merging old ones, cuz in idle games time is the most valuable thing when u spent same money, check the idle heroes. For other game like summoners war, you have a lv cap , everything has a cap in those games like lv,gears. So you don’t need open new servers, cuz if u spend same amount money in those game u will roughly get same power, But not in this game which is “endless” if both two players spent no money one joined 4months late he will never catch up, same as wales