This may be a little broad of a question, but: Why is this being commercialized at all? The linked article makes a lot of noise about benefits for the developi

This may be a little broad of a question, but: Why is this being commercialized at all? The linked article makes a lot of noise about benefits for the developing world but making the coating tool dependent on the profit motive will naturally target those with existing money - the developed world. I'm just having a hard time squaring this particular circle.