This is very interesting. One can buy the flame retardant over the counter and apply it themselves already. But like the article states, it is only temporary, so it has to be done just before a fire.
Generally, I like technology and it's solutions, but as a person who has lived in fire prone areas his entire life (first, the Topanga and Malibu areas, and now Sonoma County) I feel that our approach to wildfire continues to lean toward relying on technology rather than looking at why we are having the problem in the first place. And that would be:
1. We do not manage the fuels they way they should be managed. Fire has always been a part of the western landscape and for over 100 years we put each and every one of them out as quickly as possible.
2. We do not manage the fuels that are created by interfering with the natural cycles of fire. If we choose to prevent the fuels that would burn off in a fire from burning, then we must remove them ourselves. WE DON'T.
3. We continue to build more of our cities and towns in areas that are naturally fire-prone and have historically burnt time and time again and then expect them to not burn. Sorry, but lets put the facts on the table.
4. We can blame climate change, and it may be a small percentage of what's going on, but human behavior and the resistance to do what we need to do because of inconvenience is the primary cause of our urban interface fire problems.
I wrote a great thesis about it in 1992 (if I do say so myself). It's amazing how nobody learns from history.