Comment by Gustomaximus

I was thinking the issue might be its much better for factories to automate sections of production over time.

It must be a huge expense with risk to design a new factory, automate it end to end and push live hoping the market expectation for the product exists and the automation is as good as planned.

Whereas if you have a manual production line you could have a massive advantage as they can automate out sections ongoing and it allows engineers to build skills in this also as they go.