Yes, and the game’s publisher has an exclusivity deal in place and the devs can’t turn around and decide to give their game to another publisher
This is not the exclusivity that I am talking about. Publishers as a rule still publish games through multiple channels. I am talking about exclusivity of the storefront. Not publishers’.
Imagine if all storefronts had only exclusive games. Then they would have nearly zero incentives to have a good storefronts that users like and instead just hunt for the best games. The users would not have a choice which storefront they like - the market is totally broken and not working in this case.