Imagine how many would play gta online if the servers weren't a nightmare. If the ps5 version solves this then it will have even more players active.Er, you realize GTA5 is usually among the top 5 games sold every month even though it's 7 years old right?
GTAO is a juggernaut. I'm not sure if GTA6 is the most anticipated game given I have no idea if the average player gives a damn about a sequel or just wants to keep playing GTAO as it is.
Anyway GTA V sold like 10M at launch coming off the less successful GTA 4. Imagine what 6 could do including digital. 20M at full price? That's serious bread.