It provides an area for Bluesky to bring in new users that focus on video content for their social media promotion. You could have a company upload and promote their latest widget with a short video that would attract people to interact on their posts. Similar to how Xtwitter worked, flashy stimulation to corner reactions while keeping people engaged on the platform. The difference is that, Bluesky doesn't penalize you if you post a link to an outside website. Which in my opniion is a much better way to keep users to using your platform.