In what sense did Copilot fizzle badly? It's a tool that you incorporated into your workflow and that you pay money for.
Does it solve all programming? No, of course not, and it's far from there. I think even if improves a lot it will not be close to replacing a programmer.
But a tool that lets you write code 10x,100x faster is a big deal. I don't think we're far away from a world in which every programmer has to use AI to be somewhat proficient in their job.