Apple's new folding iPhone costs $1,999 and opens into a screen almost as big as an iPad mini. The first app I've seen that actually makes that inside screen worth the money is a chatbot. Folding phones have been around since 2019, and close to 100 million have shipped. The knock on them the whole time has been that most apps just take the regular phone version and blow it up. You paid an extra thousand bucks for a bigger Instagram. Now look at what's happening in this video. On the left…