Grand Theft Auto VI exists in its own universe

This is The Stepback, a weekly newsletter breaking down one essential story from the tech world. For more on GTA VI and the state of the video game industry, follow Andrew Webster. The Stepback arrives in our subscribers' inboxes at 8AM ET. Opt in for The Stepback here. How it started Four years ago, fans got a long-awaited look at Grand Theft Auto VI with a huge cache of videos that showed off Rockstar's latest open-world epic. There were 90 videos in total, providing a glimpse at the…