You might like the novel Singularity Sky. It’s about a planet, artificially maintained at a 19th-century tech level by its authoritarian government, which is suddenly visited by a post-scarcity civilization. Cellphones begin to rain from the sky all over the planet and whoever picks one up is given an offer: Tell us a story and we’ll give you anything you desire. One person asks for a self-replicating replicator with a fully stocked blueprint library and it ends up being extremely disruptive in many of the ways you’re imagining.