Here’s a possible use I foresee:
The LLM app that wins will go beyond the chat interface. It may start as a text prompt but it will build its own interface to meet the needs of the user.
So if you need to shop for a car it build an interface that pulls car data from relevant sites/api’s and displays it in a useful way. It’ll create a way to buy or contact the seller. It will be able to answer any questions you have. Etc.
Imagine an app that can morph into any app you may need.
That’s the future of LLMs.
On the other hand, making a small purpose-built app is easier than ever now. A couple days ago I made a transcription app using OpenAI's whisper model, and it maybe took me ~5 hours of work, start-to-finish. That's including the GUI. That's a pretty quick time-to-MVP, and has a better shot at disrupting something than a half-baked "everything app" that can't ever hope to compete with heavyweight purpose-built apps.