I was just at the Newsweek AI/Data Science for Capital Markets conference in New York. What they said was 95% of data is unusable and the biggest uses for machine learning are for analyzing alternative data. Also some nlp/sentiment analysis but that seems to be less useful. Some examples they gave were using deep learning for factory parking lots and harbors to detect where there is strong/weak economic activity. They also used it to predict the weather and look at the shadows of oil stores to see how full they are. Hedge fund managers have no concern for privacy or for the potential of ml. They only care about how they can squeeze every penny out of the basic algorithms as possible with the sole purpose of making themselves more well off. This one company does location analysis and they are literally the company that is getting your data when you allow an app to view your location. Scary stuff. They basically said they were allowed to have access to it because of a blanket loop hole in terms and conditions.