Collecting fog electrostatically is 2x more efficient than desalination. It works by ionizing the droplets in the air and collecting them on wire meshes: https://www.science.org/doi/10.1126/sciadv.aao5323. The technique also doesn't produce tons of salt waste that you have to dispose of.

It's a potential solution for towns/cities next to the ocean. Desalination is cheap enough already if we get desperate.

It won't be cost or technical feasibility that prevents us from solving the drought problem.