If DS was a fluke where's the "inevitable" handheld decline?

[Zod95]

Handheld hardware sales by year:

2001: 20M (considering GBA sold 80M in 4 years)

2002: 20M (considering GBA sold 80M in 4 years)

2003: 20M (considering GBA sold 80M in 4 years)

2004: 20M (considering GBA sold 80M in 4 years)

2005: 21M

2006: 30M

2007: 42M

2008: 44M

2009: 47M

2010: 30M

2011: 30M

2012: 25M

2013: 21M

2014: 13M

2015: 10M

2016: 6M (will it end at 7M ?)

The market is declining for 7 consecutive years with 2 major slumps in the last 3 years.

And if it wasn't for Sony creating a new segment (with PSP), the handheld market would probably be declining for more than 10 years.

The handheld market is gone.