R* has made like 3 announcements about GTA 6, and suffered a massive GTA 6 leak, and people still don’t know GTA 6 is a thing. Outside of the R* fanbase a lot of people just don’t care about GTA anymore. It’s been too long since the last game. GTA may very well be an outdated concept for a game for the modern times.
Even with GTA V I feel like the gameplay is a little too slow and at times cluncky, as well as having a general dislike for how Rockstar structures missions. Other than that there’s no game that comes close to the otherwise awesome experience only a GTA game could give ranging from the graphics, memorable stories/characters all the way to the sheer amount of things to do and explore.