Price plays a role too, only 17,55 Euros for Squirrel here and Concord 40 Euros, plus 20 for Deluxe.
I was interested into Concord, not gonna lie. But even if I wanted to buy and play the game, accept their terms of usage and create a Sony account, its not playable on Linux. And to be honest, I’m thankful for not being able to waste my money and time.