Google's Chrome would be a good example. Google's business is not selling browsers.
There was a time when browsers were sold on store shelves where I worked; namely Netscape. Today we live in a world where people are accustomed to getting them for free. This is not necessarily better as one can see trying to use Chrome without sending private information to Google.
Software has zero intrinsic value. It doesn't generate a single cent (unless you've written a BitCoin miner, I guess).
Video games generate 20+ billion a year and downloadable ones are comprised entirely of software.
I'm always looking for a new idea that will be more productive than its cost. -- David Rockefeller