This right here.

I have found some of the greatest products I have used came from:

"I'm working on this project, the tools I currently have are just different forms of a hammer...I need a screwdriver. I built a screwdriver. This screwdriver is the only tool I'll consider when I face this situation."

The tools sell because the people doing the work and feeling the pain react strongly while pointing at the incompetent layers above with purchasing power. Giving (or showing) someone the solution and then taking it away is probably the most common reason I have seen someone leave a situation.