I'm just worried about Sony's long term viability. They don't seem as competitive as they once were, and as you say, they have this not-invented-here culture similar to other old line companies that are no longer dominant (Nokia, IBM).
Is there anything in Sony's current crop of cameras that is based on Oly tech? I don't think they've added Oly's five-axis IBIS into any cameras yet.
Sony's investment in Oly may pay off in the future, but I'm not sure it applies to anything Sony currently sells.
http://www.pcworld.idg.com.au/article/430757/rise_fall_sony/
[1] http://www.sony.net/SonyInfo/IR/financial/ar/2013/shr/pdf/An...
EDIT: Changed to correct link. Thanks e12e for pointing it out.