Some of them are worth keeping but also some of them actually should go. Close to where I used to live in Düsseldorf there was a plastic bottle factory that employed 500 some people and it only continued to be open because it was apparently impossible to let anyone go, the entire thing was long uneconomic.
Mind you even here in Germany our economy is 70% services, the bulk of the employment happens in the Mittelstand. The number of highly energy intensive companies is quite small. Reducing energy prices is good for consumers but more important are structural reforms. We have to good an education and too high a wage level to keep people working in plastic bottle factories. It actually made sense that some of those jobs left the US 30 years ago.