If you can retail a capable Android phone for under $100, how is Apple going to maintain their market dominance? Actually, worldwide, Android already has the lion's share of the mobile market (43% according to 2011 research by Gartner, vs only 18% for iPhone), and it's likely to continue to grow. The sub-$100 phones just prove that Android is flexible enough for pretty much anything. The real question is whether that dominance will turn developers to think of Android first and iOS second.
Mokalus of Borg
PS - Apparently the new iPhone might be due out later this year.
PPS - That could change things again.