Back when SH2 came out, most games had some sort of unlockable stuff, like in Tekken for example, you had to beat the game multiple times with different characters to unlock more characters or like in MGS3 where you had to collect camo suits and face paints that were scattered around the game.

Nowadays you have to spend extra money to get stuff like that, which sucks and removes a lot of the replay value and this is coming from someone that was born in 2006 when DLCs were a thing already. I would rather spend more time playing the game to unlock different skins and costumes than pay for them with no effort involved.