Just came across an article discussing government support for hydroponic farms on the islands of St. Kitts and Nevis.
Such support is and will become increasingly important for farmers looking to get into the industry. While capital expenses are falling as things like lighting come down in price, the required equipment plus a greenhouse or shade structure are considerable hurdles for small-medium sized would-be hydroponic farmers to overcome. Government support through tax reduction, matching grants, or subsidies could play a huge role in helping the industry expand even faster than it already is.
The more of such greenhouses we have in place, the better equipped we will be to weather (pun!) the impacts of climate change and the freak storms and droughts that will become more common in the coming years. The solar industry was in a similar position, with high capital but low overhead expenses. Government subsidies have allowed the solar industry to expand towards a place where their capital costs have come down enough that can outgrow the need for subsidies (not quite there yet, I know).
Let's see the same for our food systems.