The government that runs Amtrak (which has lost $23 billion, in today's dollars, just since 1990) vows to make GM efficient. But one reason Amtrak runs on red ink is that legislators treat it as their toy train set, preventing it from cutting egregiously unprofitable routes.
The Edsel was one of the biggest flops in the history of car making. Introduced with great fanfare by Ford in 1958, it had terrible sales and was junked after only three years. But if Congress had been running Ford, the Edsel would still be on the market.