If they do bad work their reputation is harmed and they may lose opportunities in the future. They have stakes. They can take responsibility for what they produce.

I believe in AI-assisted development with a skilled human directing the work. That's a huge productivity boost for the humans who learn how to use the tools.

(Twenty years ago people studying computer science in the UK and USA were often told that it was a dead-end career because all of that work was going to be outsourced. That advice aged like stale milk.)