Essentially all EDF Nuclear power plants? Apple's replacement for the classic Mac operating system scheduled for the mid-nineties as an internal project but eventually achieved by buying an entire OS company?
A large number of movies, split roughly equally between masterpieces like Alien and forgettable failures like Water World?
The idea that the private sector is somehow more efficient at large-scale projects can only be believed by people who deliberately ignore the track record of large-scale private-sector projects.
> In 1993, FoxMeyer Drugs was the fourth largest distributor of pharmaceuticals in the U.S., worth $5 billion. In an attempt to increase efficiency, FoxMeyer purchased an SAP system and a warehouse automation system and hired Andersen Consulting to integrate and implement the two in what was supposed to be a $35 million project. By 1996, the company was bankrupt; it was eventually sold to a competitor for a mere $80 million.
> In 1998, two years after filing for bankruptcy, FoxMeyer sued Andersen and SAP for $500 million each, claiming it had paid twice the estimate to get the system in a quarter of the intended sites. The suits were settled and/or dismissed in 2004.
> Installed in 2003, the system promptly ran into what were then described as "horrendous" barcode-reading errors. Regardless, in 2005 the company claimed the system was operating as intended. Two years later, the entire project was scrapped, and Sainsbury's wrote off £150 million in IT costs. (That's $265,335,000 calculated by today's exchange rate, enough to buy a lot of groceries.)