Recently I showed my 7-yr-old son and a friend of his how they could build their own little video games with the Claude app. Simple stuff, make me a maze game, make the walls move sometimes, make it bigger, make there be a score.
The delight they have at, video games aren't just a thing to play, it's a thing they can design and change, share with each other... I think that dream of a truly malleable experience is still there, I think this "explosion of new forms" you talk about is happening right now with AI, and I think this time it is going to be bigger than ever.