Apple has replaced Sony as the defacto portable electronics maker. Sony has virtually no stake in that arena anymore. They really didn't even put up a fight, which is sort of a sad thing considering how long the Walkman/Discman brands were relevant for.
Sony still has sway in TV market ... but not the same extent it once was. Brands like Samsung nowadays command a lot of sway at retail, having a "Sony" TV is no longer really thought as something better than anything else.
In the gaming market, Nintendo has become the "trendy" game company while Microsoft has committed themselves basically into forcing Sony into a losing battle of attrition for what's left of the hardcore gamer segment.
The days when Sony could just show up to the console party and just wait for Nintendo and Sega to screw up and then take the lead are long over.
Their film division is doing so-so (9% of domestic box office this year thus far).
Sony is a brand stuck in the 90s. There's just something slightly archaic and dated about their designs and philosophy even though they still do make some good products.
