It also has some takeaway about how to build your product. Make a product which the users are going to be excited about and want to preserve, so they will help

It also has some takeaway about how to build your product. Make a product which the users are going to be excited about and want to preserve, so they will help other people trying to use it. There seem to be enough people around who don't get that, that it's a non-obvious insight. It's probably because they are just like the "C++ people" in the story, though; they've already made up their minds before you started talking to them.