Yeah I agree But keeping prices low is good for consumers And if consumers only have one singular outlet to purchase their products then they will just inflate the prices of the products for the sake of doing it.
While I agree with this, and more choice is theoretically always a good thing, Sony does not determine the price of third party games: The developer does. Having 50 storefronts will not change that, the same way lowering the "cut" will not decrease prices.