This wouldn't solve the problem of diagnostic standards. Let's say you are a pediatrician and want to predict which kids with bronchiolitis will develop respiratory failure and need the ICU versus the ones who can go home. How do you determine from the body cams which kids had bronchiolitis in the first place? Bronchiolitis is a clinical diagnosis with symptoms that overlap with other respiratory illnesses such as asthma, bacterial pneumonia, croup, foreign body ingestion, etc.

In healthcare, HIPAA/GDPR equivalent would block this. Let's be realistic in our discussion; this is not the same as google buying up a library worth of books, scanning and destroying them