Having the ideas necessary to know what to write is where practically all the value lies (caveat: there is value in doing the same as someone else but better, or cheaper.) AI can help with that, but only in so much as telling you the basics or filling in the blanks if you're really stuck. It can't tell you the 'clever bit' because that is by definition new and interesting and doesn't appear in the training data.
What this means is that at some point Anthropic will be able to prompt Opus to clone Jira and never pay an Atlassian bill again. Opus just needs to figure out what Jira is first. It's not there yet.