Can I transfer a game from a friends PSN account to mine? [closed]

Ultimately, when you purchase a game you are purchasing the rights for that game. There is no allowance for transferring the game to another account. Furthermore, accessing another users PSN account is against terms of service as much as deliberately providing another user with your account details is. You have a better chance of both your accounts being blocked, either temporarily, or permanently.

If your friend made a mistake purchasing Grand Theft Auto V, there is a possibility that Sony will offer an alternate solution. That said, if he has already played it, this is quite unlikely.