Regarding these last turn of events I'm gonna go a head and make a prediction.
PS4 will launch in October 2013.
It'll cost between 30.000 - 35.000 yen, which will be something like $/€349 - $/€399. Sony will be making a modest profit (at the very least) from the get go.
And it'll be about 5-6x as powerful as PS3 (<-- I have no idea if this is doable considering the price I just listed, it's just a hunch).
They might even launch a StreamStation for 15.000 - 20.000 yen ($/€199 - $/€249) without any Blu-ray and disc reading capabilities; this'll be a Gaikai console of sorts.
That's my thoughts regarding their financial situation.
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Furthermore, I think VGChartz should add a "Like"-button.