Why don't ps2 controllers work with GTA 5?

PS2 controllers do not work with GTA 5 primarily because the game is designed for more modern consoles like the PS3, PS4, and PS5, which use different controller technology and communication protocols. Additionally, GTA 5 requires features such as analog sticks and buttons that are not compatible with the older PS2 controller design. Even if you could physically connect a PS2 controller, it would not be recognized by the game's software or hardware.