How might near-instant AI generation change what people create?

A user wonders what people would choose to create if AI could generate an entire project in a second or less—and whether AI agents might come up with the ideas themselves. They speculate that physical production could become the next constraint: even if hardware plans were generated quickly, an object might still take 30 minutes to 3D-print. They also ask how faster generation, like that of real-time video models, might change content.