Pie dough is quite simple, but I imagine they use some chemistry to improve, as per the other food chemistry posts...
You can get it quite quick with a food processor or a kitchenaid mixer, but kneading such a dough by hand and having the time to let rest, flatten with a rolling pin and pre-bake in pan, push pie up a bit in the effort ranking.
So i feel there is real value in quickly putting a pre-flattened doough sheet in a pan, especially if some chemistry can skip the pre-bake step.
So i see the appeal much more for this product over pound cake mix which is just four, sugar, egg and leveling agent.