GTA 5: Rockstar didn't feel single-player expansions were either possible or necessary, despite promising them at one point

Rockstar has said it didn't feel that making more single-player content for GTA 5 was necessary.

Grand Theft Auto V (Xbox Series X) Review - CGMagazine

The RDR port is *NOT* developed by Rockstar Games, once again they have decided to outsource, this time to Double Eleven Studios, supporting studio on such incredible games as: Fallout 76 Crackdown

Grand Theft Auto 5 Story DLC FAQ - GTA BOOM

It used to take less time to pump out new games and Grand Theft Auto V was massively profitable for Rockstar so they decided to milk that cash cow for as long

GTA 5: Rockstar didn't feel single-player expansions were either possible or necessary, despite promising them at one point

GTA 5 Story DLC Expansions Won't Happen And Here's Why - GameSpot

Ranking Rockstar's 3-D 'Grand Theft Auto' Games - The Ringer

Rockstar needs to remake this instead of GTA 5 again! A remake of this would be sooo 🔥 : r/reddeadredemption

I can definitely see why they never did a single player DLC for GTA 5 like they did with GTA 4 : r/GTA