One of the biggest fears about AI was that it would kill tech jobs and shrink the software industry.

The logic seemed straightforward. If AI made developers much more productive, tech companies would need fewer of them. That would mean fewer software subscriptions, known as “seats,” because each worker typically has their own account.

Investors also worried that AI coding tools would enable companies to build more of their own software rather than buy it from established vendors.

The software giant Atlassian sat right in the way of these buzzsaws because it sells tools that help teams organize work, collaborate, and build software. That drove…