People in different regions are able to pay different amounts for a video game. You don’t want to sell a game for €40 to someone willing to pay €80, you also don’t want to miss out on the €40 from someone who’s only willing to pay that amount.

This is also why there are artificial tiers, like an ‘ultimate edition’ and shit like that.

Same goes for things like internet speeds. A 1gbit connection is actually slightly cheaper to sell than a 100/100 connection, but they offer different price tiers to extract the maximum amount someone is willing to pay.