Sony's money problems are not necessarily a death knell, but dire is not an entirely inaccurate descriptor either.
Sony has made two separate real estate transactions in 2013, selling off their Tokyo and New York headquarters for $1.3 billion and $1.1 billion respectively. Sony's electronics division is arguably their only ailing division now that they have shed their Vaio division and this year saw an increase in revenue for Sony simply because of favorable currency exchange rates.
Despite those facts, Sony still managed to lose $1.3 billion as a company, not just a single division.That scenario is quite telling.
According to reputable portfolio management firm, Macroaxis, Sony has a 46% chance of going bankrupt in the next two years.
http://www.macroaxis.com/invest/ratio/SNE--Probability-Of-Bankruptcy
Sony's equity (value of all liabilities subtracted from the value of all assets) is only $23 billion, which only highlights why a $1 billion loss is a big deal. It isn't as if Sony can absorb hits for some prolonged period of time. History has already shown us this song and dance with numerous other companies, especially in tech.
There is a reason why Sony has been leaning hard on the Spider-Man franchise and has been stupid enough to announce annual films and spin offss based on the property. That isn't an act derived from wise business acumen, it is a strata born of desperation.