The case you referenced says scraping is legal. It does not say re-publishing the scraped data is legal.

>I don't understand how this data would be protected under US law. Can someone explain if you think otherwise?

For something to be copyright-able it needs to have an element of creativity. That's why you can't copyright facts. Arguably, the net worth estimates require a degree of creativity to come up with. They aren't "facts", they are estimations based on research.