Need five or more examples when an enterprise has made an erroneous
decision to spin off internal software development team into a
separate private (non-public) company. Erroneous means that the
enterprise has lost in the end (i.e. software quality suffered, or
enterprise has lost control of the core software product with some
negative results, or software company did not survive on it's own,
etc. that eventually led to substential financial losses to the
enterprise).

Ideal examples should involve banks or financial institution.

1) This link will tell you about one of the events where software
quality suffered http://catless.ncl.ac.uk/Risks/14.37.html#subj12

2) This link contains lot of financial lossed suffered
http://catless.ncl.ac.uk/Risks/4.01.html
I am including the content for your information

FINANCIAL LOSSES:

$  $32 BILLION overdraft at Bank of New York (prog counter overflow) (SEN 11 1)
$H $2 Billion goof due to test tape being rerun live (SEN 11 2)
$H .5M transaction became $500M, due to "000" convention; $200M lost (SEN 10 3)
$  Slow responses in Bankwire interface SW resulted in double posting of tens 
    of $millions, with interest losses (SEN 10 5)
$  California state computer wrote $4M checks accidentally (SEN 11 5)
$H ATM accepts lollipop cardboard as $1M (New Zealand) deposit (SEN 11 5)
$H ATM money dispensers blocked and emptied later by youths (SEN 11 5)
$H Barclays Bank hacked for 440,000 pounds? (SEN 11 5)
$H ATMs gave $140,000 on VISA card over a weekend -- software glitch (SEN 11 2)
$  Program bug permitted auto-teller overdrafts in Washington State (SEN 10 3)
$  IRS reprogramming delays; interest paid on over 1,150,000 refunds (SEN 10 3)
$H San Jose library lost two weeks of records.  Books, fines lost.  (SEN 11 3)
$H Video quiz game scam -- teams of "experts" with right answers (SEN 11 5)

Hope your hunt will gather momentum with this information.

Regards
Shireesh

Shireesh, thank you for your comment. However, it consists of one-time
software errors that can happen regardless of who wrote the software -
a spin-off or an internal division.