I found this interesting because, in the HN bubble, we mostly talk about monetizing solutions for the problems of privileged folk. For example, Paul Graham's "Startup Ideas We'd Like to Fund".
Bill Gates argues that solving the problems of the less-privileged doesn't have to be purely philanthropic -- there's actually profit to be had if you know how to find the right market.
This was written in 2008. Have there been notable examples of creative capitalism since then?