Failure is the norm
I have just finished reading the excellent Paul Ormerond's book 'Why Most Things Fail'.
One snippet stood out - In the book he argues that Companies, policies, initiatives etc fail more often than we realise and that the process is hard to predict - read the book for the full argument, needless to say the Market mechanism and constant innovation are the answer.
As a side issue it is how we deal with failure that is important - we know how slow Governments are to recognise failure and act. Coca Cola made a bit of a hash of it when they introduced "New Coke" - Huge investment in research, money and prestige, but they got it wrong. New Coke introduced 23rd April 1985 - withdrawn and Old Coke back 11th July 1985. That is the speed the Market makes things happen.