In Japan still many system integrator company that large corporation relies on continue using waterfall approach. They keep to out source a lot of engineering work for making design documents, manual testing, etc. They would keep to hire many middle class engineers.
Sushi and Ramen restaurants are both extremely popular outside of Japan, and often started by Japanese immigrants. Other Japanese food is less well-known.
Multiplayer agent harness is useful only when the context and AI output does not overwhelm the team space and works asynchronously and background.
If you think about it, that could be just boring job scheduler, isn't it?