Because it's not relevant, and has already been discussed to death. The PS3 lost Sony a lot of money, but it has been profitable for a few years now and Sony are financially stable enough to keep bringing us new consoles and games.

The PS3 wasn't doomed because it sold 80 million, WiiU will be lucky to reach half of that. Being "doomed" has nothing to do with profits. I'm not sure where you're trying to go with this.

http://en.wikipedia.org/wiki/Sony

Net income = Increase US$ 458 million (2013)

Alright, so some of Sony's other divisions are losing money but the company as a whole is still profitable. Sony's movie division is losing money? You're the one making stuff up:

http://www.sony.net/SonyInfo/IR/financial/fr/12q4_sony.pdf

I can not comment on the current fiscal year but Bloomberg is projecting a massive increase in revenue:

http://investing.businessweek.com/research/stocks/earnings/earnings.asp?ticker=6758:JP

The question is not what am I on but what are you on? Actually no, the question is how does this relate to the OP? The OP is also wrong and they have failed to back up their claims.

Actually, being doomed is all about profits. If every Sony console starting with the PS5 was like PS3 (Sells a lot, looses a lot) and every Nintendo console from now on was like the N64 and Gamecube, (Sells little, but makes profit) Sony would go under first, making them the "doomed" one.

I should add: the question in your title refers to the current status of Sony, which is much better than a few years ago. That's why talk of "financial problems" is less common. Still though, no one denies circumstances of the entirety of the PS3's life. 

It's like you can't even follow simple conversation.

"Whenever I see articles about how the Wii U is doomed, lots of the writers talk about Sony like they never loose money and are perfect. It's like they're completely ignoring how much money the PS3 lost. Does anyone here know why people do this?"

The aforementioned writers are not bringing up the PS3's losses because they are not relevant. Why is this so hard to understand? Sony has far more assets than Nintendo and a far more diverse range of products, therefore we can not directly compare Nintendo's current situation to Sony's circa 2007.

You're moving the goalposts now.

The bottom line is, if you can't gain a respectable marketshare, you're still doomed, regardless of how big your bank balance is.

If you want to talk about which company's financial situation is worse, go ahead.

My, aren't we grasping at straws.

Are we talking about the WiiU and PS3 or Nintendo and Sony here?

You seem to be clinging onto the idea that Nintendo being an overall more profitable company makes the WiiU a successful console. Believe what you will, but you'll be in for a nasty shock if worst come to worst and the WiiU dissapears off of European shelves within the next year or so.

from what i understand isnt Ninty just breaking even with Wii U?

If you look solely at current profits, then sure, it would seem obvious that the Wii U is in a better position than the PS3. But such an analysis would be quite shallow; a thorough analysis of the two consoles would include not only current profits, but also potential for future profit, since that’s what’s ultimately going to determine doomage. For example, an unprofitable console with high likelihood for future profit is probably less likely to be doomed than a marginally profitable console with high likelihood for diminishing profits/sales.

It just so happens that the PS3, while highly unprofitable, wasn’t likely to be doomed. The PS3 had sustainable hardware sales, but its manufacturing cost was too high. With the Wii U, its problem isn’t manufacturing cost, but its hardware sales. It’s easier to predict that the PS3’s problem would be solved since manufacturing cost will inevitably wither away, and Sony would be able to absorb the losses until then. As for the Wii U, there isn’t a similar inevitability that hardware sales will increase to respectable levels, unless sub-Gamecube sales are considered respectable. 

Keep in mind, this has nothing to do with your claim that people say the PS3 was a huge financial success (which no one says), or with the current financial status of Sony (which is better these days).