Look at it from console generations. The Xbox 360/PS3 generation got two GTAs (GTA IV even got two add-ons), RDR, and if you want to count it L.A. Noire. The PS4/Xbox One generation got RDR 2 and a rerelease of GTA V. I doubt it’s about scale, they just wanted to milk GTA Online and didn’t care about anything else.
Look at it from console generations. The Xbox 360/PS3 generation got two GTAs (GTA IV even got two add-ons), RDR, and if you want to count it L.A. Noire. The PS4/Xbox One generation got RDR 2 and a rerelease of GTA V. I doubt it’s about scale, they just wanted to milk GTA Online and didn’t care about anything else.