Why doesn't pve have pvp combo structure?

[Rymi64]

As I said, there are at most two jobs that use a straight 3 button combo.

No matter what the rotations tend to be self centered. Most of the conditions that determine what button is to be pressed are internal to the player character. Combat should be more reactive to the opponent. Rotations shouldn't really be a thing in RPGs. It should be based on the needs of combat. It's all regressed in recent years and today's designers are kind of short sighted.

The jobs that could get away with having them consolidated into one button are DRK, GNB, and MCH (one could argue PLD WAR and NIN could also get away with it).

Rotations have always and probably will always be a thing in an RPG since there most likely will be an optimal skill order to use to do the most damage its just that a lot won't tell you the exact rotation (though 14 doesn't really tell you outright what the rotation is so eh)