Line graph of Itanium sales forecasts, 1999-2009. Most are wildly inaccurate, showing up to $40 billion sales within 2 years. Actual sales from 2003 to 2006 were not more than $1 billion.
https://cdn.fosstodon.org/media_attachments/files/113/700/026/330/017/122/original/4ececc1b3700322d.png