Contractors that produce standing metal seam roof panels on site are right inline with this concept. They bring a magic machine with a long roll of steel. Then they form and cut the panels to lengths based on the job site. It’s a super cool process to watch and very efficient.

Same with gutters, for a long, long time. My parents built their house nearly forty years ago, and the day the gutter guys showed up with their machine was young-me's favorite day of the whole project.