Recently I read about OceanReef's Nemo's garden, which is growing terrestrial plants underwater inside a dome on the seefloor. I did not found any other company doing it.
If it is that good as it is claimed to be (lack of pests and doseases, stable temperature), why did not the technology go large scale in the past years? There were articles about it from 2015 so quite a few years passed since then.
So why didn't the technology went into large-scale commercial use yet and is there any specific reason why noone else seems doing it?