Absolutely, and especially at a Corp as big as Sony, you have a lot of office politics in play also. Folks pushing personal agendas because it advanced their career.
Absolutely, but fiduciary responsibility, has never and was never intended to mean absolutely maximizing profits and especially at the long term expense.
That was a twisted idea that was put forward in the late 70s early 80s as a means to justify destroying companies for short term gain.