You can't one shot a perfect app with AI.
You definitely can create a pretty complex and beautiful production-ready app with AI in a couple of days or weeks depending on what exactly you're building.
I now have my own link catalog, read-latter app and an RSS reader. Tailored to work exactly how I like. Hardened, with automated backup, and external users for the RSS app. It works. It takes learning, some knowledge of terms and very high-level practices, plus design thinking, but I haven't written a line of code for these.
My search engine is a digital product that's already free and private and good and is different to when you give someone your home address to send a package.
Publishers want them and many have tried. It is the other way around, people don't want to make micro payments. Some say they do, but the evidence proves they're wrong.
I think the majority publishers have tried it in the past 10-15 years.
If you are a publisher, something which gains widespread attention might happen in your region, or an article might become viral for other reasons. You know that a lot of people would like to read that article and not become subscribers. So if you can sell access to an article 50 000 times for 1 dollar, that's $50 000 in income you wouldn't otherwise have.
But unfortunately, very few people are willing to pay a dollar or 50c for an article which they are desperate to read.