That they have this type of control over a developers game will lead to more anti consumer results like this. Sony can fully fuck off with this BS.You make it sound like Sony are out to scam people over a couple of dollars which is just insane.
It's far more likely they had a set amount of games they wanted to discount and they stuck to it, that's all.
Seriously the amount of deals they have had for indie/1st party/3rd party show that they aren't against discounts.
It was discounted once before if you had PS+ so it's not like they're against it.
Yes, there's only so much room on the discount shelf...