I simply don't believe the model is that good. Otherwise, maybe try to compete with OpenAI directley?
For Microsoft it doesn't make a difference. They are taking their own cash, investing it in OpenAI, and then turning right around and booking it as revenue. As a bonus it makes Google look wrong-footed. But fundamentally Microsoft doesn't care how much money they torch doing this.
The code changes are the most common tutorials you can find on the web. Adding a speed slider, the terrain tutorials are literary called "height maps" and focus on making it taller or flatter.
This one seems to be super straightforward about timeliness and capabilities, but the examples might be a bit simpler than people think. This is pretty amazing but like someone else said you could achieve similar results from rag due to the lack of novelty in these questions and the fact that each dealt with pretty independent examples as opposed to using custom code developed elsewhere in the codebase.