http://www.electronicsnews.com.au/news/us-commercialisation-in-works-for-asthma-diagnosti
Omron and Philips (rumoured) see the potential here, perhaps they have done their fundamental analysis.
When building a castle you need to peg a site before you order the bricks for the climb.
I prefer to be in on groundfloor.
All ISN needs to do is market their product effectively.