If you don't mind a video that's a bit "Youtube-y", Corridor Crew had a great example of the situation here (including Runway!): https://www.youtube.com/watch?v=fmJ74774RO8. The short answer is that AI isn't mostly making new things possible, so much as it's making old things, like compositing, much MUCH faster. 10x so in some cases. Other videos have shown similar stuff getting gradually integrated into the larger production software.

Machine Learning is also genuinely making new things possible. Two Minute papers has a video here: https://www.youtube.com/watch?v=22Sojtv4gbg demonstrating a model that trains on driving footage, then adjusts video game footage to look almost indistinguishable from a real world shot (and in real time!). This is technically a video game application, but it's not hard to imagine how this could be used in a video or movie context.

The extent to which this site/software actually captures these broader trends is probably minimal, but they're definitely out there. I think we're on the edge of another huge shift, like the one where CG became more practical and down-to-earth so it could be used anywhere. A lot of the same stuff will be done, but by a couple of people rather than an army of editors.