All of the components involved are being extracted from existing cells. There are already plenty of nitrogen fixing bacteria, the sources of their nitrogenase a

All of the components involved are being extracted from existing cells. There are already plenty of nitrogen fixing bacteria, the sources of their nitrogenase and hydrogenase enzymes. This is maybe novel in that they got the nitrogenases working in vitro. But from a world changing technology perspective this is a very tiny step compared to re-engineering the enzymes to work off of a different non-biological energy source than ATP.