not only does hydroponics create a closed loop system where nutrients and pollutants can be recycled on the farm itself (which should reduce costs.), and not only does it have higher yields, and not only does it allow for year-round growing, but it could potentially reduce carbon emissions from
transportation, which is a significant amount of the problem - and increase nutritional value in the process.
it is the head and shoulders best solution out there.
which is why nobody supports it.
but, technology always wins in the end.