Had a similar problem in medicine in a startup, which also failed. Although people did want to pay, you can only have large scale deployments if your are able to finance multiple studies over multiple years. By then smaller manufacturers are most certainly broke.

Want to make money there? Don't try to find cures or therapies for indications a small percent of people suffer from. Just invent another beauty cream, that's where the money is. No, I’m not bitter either, just maybe a little.