DS:
2004: 1 million (only holiday)
2005: 4 million
2006: 9 million
2007: 7 million (-22%)
2008: 4 million (-43%)
2009: 4 million
2010: 3 million (-25%)
2011: 700k (-77%)
2012: 30k (-96%)
3DS:
2011: 4 million
2012: 5.5 million
2013: 5 million (-10%)
2014: ??? (so far -50%)
I don't think the 3DS is going to hold like the DS did in 2009 and 2010 (so for the 3DS 2015 and 2016). Its going to sink much quicker.
I totally agree with you. The cause is the mobile gaming, not the lack of new ip's.