Stupid quote that doesn't apply. The reality is that no new PC hardware means no new PC sales.
Did IDC Predict that the newest GPUs would focus on energy efficiency, forsaking performance improvements; and it has been well over a year since Intel broke new performance ground? Even AMD hasn't released anything worth considering, unless your in the market for a budget pc, since the middle of last year.
You are conflating cause and effect here. The hardware manufacturers are focusing on energy efficiency and forsaking performance improvments *because* sales are down. They're trying to close the gap between traditional PCs and tablets, which people are buying in record numbers for their size and battery life. The way you close that gap is by improving energy efficiency.