So, where did this estimate of 150 GB come from? It's based on the file sizes of previous Rockstar Games, like RDR2 and GTA 5. These games were massive, with RDR2 taking up around 99 GB and GTA 5 taking up around 72 GB. It's like looking at how much food you ate at a buffet last year to estimate how much you'll eat this year - it's not an exact science, but it gives you an idea!
Now, you might be thinking, "But I have a huge hard drive, I don't need to worry about storage space!" And that's awesome, but think about all the other games you might want to play, or the updates that will inevitably come out for GTA 6. Those updates will take up more space, and before you know it, you'll be running out of room. It's like having a big house, but filling it up with so much clutter that you can't move around anymore!
