Hydrogen doesn't necessarily need to be transported. It can be made on site and the process is expected to get much cheaper over time.
Also, gas isn't getting any cheaper anytime soon. That's why LNG import facilities are being developed for Vic and NSW.
https://reneweconomy.com.au/arena-backs-solar-hydrogen-plant-in-brisbane-as-electrolyser-costs-tipped-to-plunge-83916/
https://www.bloomberg.com/news/articles/2019-08-21/cost-of-hydrogen-from-renewables-to-plummet-next-decade-bnef
