My friend and I game shared on PS4. We could easily access our respective game collections simultaneously. This was down through the primary account setting. On PS5 there are no primary account settings and instead there is a "game sharing and offline play" slider that allows a one way exchange of games. What this means is my friend has access to my games but I cannot access his or vice versa. This makes it extremely hard to play different games unlike how it was on ps4.