What do plate tectonics do besides moving land around? In other words, would the only thing different on the Earth WITHOUT the movement of its plates just be all of our land masses being stuck in the same positions that they formed in forever, or would anything else be changed?

What do plate tectonics do besides moving land around? In other words, would the only thing different on the Earth WITHOUT the movement of its plates just be all of our land masses being stuck in the same positions that they formed in forever, or would anything else be changed?