They would, but the purchasers of such things are really different. For a drug biotech, you are trying to get to a point in trials where you are acquired by a l

They would, but the purchasers of such things are really different. For a drug biotech, you are trying to get to a point in trials where you are acquired by a large pharmaceutical maker, and the large pharmaceutical maker then produces it and uses their distribution network to get it into circulation. Something like water cleaning goes through really different routes. You may be selling direct to a consumer segment, or to a contractor segment that chooses the product as part of a design for a consumer, or to a municipality or utility. Those are all really different from each other, and really different from drug development. They also tend to involve a very different skillset, much more chemical and mechanical engineering.