I always felt a blockbuster film is based on the budget and had nothing to do with its gross, any film with a budget more than 100 mil was ment to be a blockbuster no matter if it failed or succeeded financially
Well considering the only thing he took with him was his cloths, that's the only thing he left there. So obviously there is no continuation of narrative, just a made up new one, so once again not a sequel. They should have called it Journey 3: VR