Australia right now gets a lot of income from shipping its coal to China. As that gets phased out it's looking for new sources of income. Exporting hydrogen (through ammonia) made from its abundant insolation is one option.
Same for north African countries, e.g. Lybia.
Hydrogen is not for everything as it's proselytisers claim, but it does have a place where it's hard to find replacement for fossil fuels, e.g. steel making.