"...experiencing your competitor’s stumbling failure (yes, Sony, Nintendo – you are, I’m afraid, stumbling failures)." Can someone explain how Sony and Nintend

"...experiencing your competitor’s stumbling failure (yes, Sony, Nintendo – you are, I’m afraid, stumbling failures)." Can someone explain how Sony and Nintendo are stumbling failures in the console market? How extreme their failure must be, to feel comfortable stating it as a common fact requiring no explanation! I must be way out of touch.