Why do online games have different fighting styels than those one consoles?

I have played a few online games like WOW, Perfect World, Pirates of the Buring Sea and am I noticed one thing about them they have in common. Their fighting systems are all alike. Why do the game developers make the system like this( where you click a button and watch your character attack) instead of making them more like Devil May Cry, Bayonetta, Halo, or other games where the fighting system is more interactive?