In Sweden, this study looks at how different industries have changed since the 1970s. They found that certain industries have grown a lot while others stayed the same. Places like Stockholm saw big growth due to certain industries. Young industries do well in places with diverse skills, while older ones prefer specialized locations. When plants are starting out, being in varied environments helps their survival. Instead of only specializing in one thing, having a mix of related industries can be good for a region's economy.