IMO, MT was the 1st mistake while TNE was 'merely' the compounding fatal one.
I wouldn't expect anyone ay GDW to admit what a big mistake they made.
It goes against human nature, esp when they all just *knew* that it was the best thing since sliced bread!
The howls of distress that resounded on this list should've been a 'fair warning' but, by then, I imagine they already 'drank the kool-aid'.
The annals of retail marketing, from largest to smallest, are replete with many, many similar tales &, in the end, the guys who are responsible always, always, always show a very high propensity to 'point the finger' elsewhere.
GDW, died due to bad decisions by management.
TNE was the last, fatal, one.