Is anyone thinking about this?
For example, you can easily pay $10000 to a trendy developer to build a chatbot for your data, or you can use one of dozens of web applications to do the same thing for less than $100.
Vercel now has a system for generating React UIs which could literally replace hiring a second developer in many projects (you would still need a human programmer for some things I think).
I have built web apps that can iterate on programs or shell scripts and directly launch servers in VMs for you.
The trick is getting this stuff to be robust enough in the face of infinite potential requirements. When you narrow the scope down and add a bit of an error correcting loop, GPT-4 can absolutely create working applications.
I am working on an agent framework and hosting system that will have agent that can build agents or apps.