> I predict a future where humans-run firms will mostly go out of business. What will emerge are companies that are great at training models that then act as active investors. These models bet against each other and some emerge as winners.

This is already happening, HFT, Two Sigma Investments, many hedge funds. And they don't just use public data, they work really hard to get as much proprietary information as they can. Just one example: https://www.cnbc.com/id/38722872