Also note that YouTube continues to push longer and longer content over time, not only as the platform grows but as the hobbyists that dominated it grow into pros.
I would question the quality of those longer videos though. The long form videos I usually see are easily made rants over stock video. They aren't typically stories like you would see in a professional shoot. Well-done youtube videos clearly have a team of people behind them doing lighting and set work, plus good editing and even some animations. They cost money too! But I'll concede that movies aren't truly special at the end of the day and they can still be disrupted in the same way as the industries I mentioned above.
