MoviePass
$9.95 a month for unlimited movies. Over 3 million subscribers within a year. It paid full price for every ticket, and shut down in 2019.
The difference is three questions: High impact? Fast? Long-lasting?
The book isn't out yet. One email when it is. That's it.

Does it actually move revenue or cost, by enough to matter?
Does it pay off while the moment is still there, before a competitor fills it?
Will it still be working in six months, or only until you stop watching?
$9.95 a month for unlimited movies. Over 3 million subscribers within a year. It paid full price for every ticket, and shut down in 2019.
Built the first digital camera in 1975, then sat on it to protect film. Filed for bankruptcy in 2012.
About $120 million raised for a $699 Wi-Fi juicer. Reporters squeezed the packs by hand and got nearly the same juice. Shut down in 2017.
No business background needed. For founders, operators, consultants, students, and anyone who wants to know why some companies turn a profit and others don't.
One email when the book is out. That's it.