Selling, General & Administrative Expenses:
GBA / GameCube era:
March 2000 - 95,709 expenses (240,740 of gross profit)
March 2001 - 99,342 expenses (184,040 of gross profit)
March 2002 - 101,114 expenses (220,266 of gross profit)
March 2003 - 95,488 expenses (195,609 of gross profit)
March 2004 - 99,888 expenses (207,572 of gross profit)
March 2005 - 105,653 expenses (217,176 of gross profit)
DS / Wii era:
March 2006 - 124,766 expenses (215,115 of gross profit)
March 2007 - 171,787 expenses (397,812 of gross profit)
March 2008 - 212,840 expenses (700,060 of gross profit)
March 2009 - 238,378 expenses (793,641 of gross profit)
March 2010 - 218,666 expenses (575,234 of gross profit)
March 2011 - 216,889 expenses (387,965 of gross profit)
3DS / Wii U era:
March 2012 - 190,975 expenses (153,654 of gross profit) = operating loss
March 2013 - 176,764 expenses (140,354 of gross profit) = operating loss
March 2014 - 209,645 expenses (163,219 of gross profit) = operating loss
You can see the issue clearly here. Nintendo needs a certain threshold of gross profit that the 3DS + Wii U combo is fundamentally unable to generate for the company. Back in the GameCube days, when Nintendo had half the SG&A expenses and 200 billion JPY of Gross profit, they could build a healthy profit.
But now, SG&A expenses are twice what they were in the GameCube days, and gross profit is down to an unprecedented level when adjusted for inflation.
The company is in a significantly weaker position than even a few years ago.