Good point, Sony still has the market for portable cassette players. The problem is that that market is dead and long replaced.
I was just discussing this yesterday, the best thing Apple has done is to not let it's prior success prevent it moving forward. The iPod is "dead" for all purposes (I'm talking about the original form) the name lives on in the iPod touch, however the touch itself is really just an iPhone without connectivity.
You could be "unbeatable" in Point and Shoot cameras however I would not want to be in that market when almost every phone new has a 8mp camera built in.
Markets come and go, staying ahead of the changes is what's important.
And the interesting thing is that the two longest-lived things on the "unbeatable"-list, the PC and Windows, are actually what the iPad is attacking (the "post PC" era).
So far, it seems that Microsoft has decided that the most competitive response is to release an "no compromise" MP3 player which is also great at playing cassettes.
I was just discussing this yesterday, the best thing Apple has done is to not let it's prior success prevent it moving forward. The iPod is "dead" for all purposes (I'm talking about the original form) the name lives on in the iPod touch, however the touch itself is really just an iPhone without connectivity.
You could be "unbeatable" in Point and Shoot cameras however I would not want to be in that market when almost every phone new has a 8mp camera built in.
Markets come and go, staying ahead of the changes is what's important.