Which is exactly why MS and Sony can ignore that Nintendo is releasing a console this early, which is the point of the thread.  Since there is no threat that the 3rd party support they are getting will go anywhere.  Nintendo will have to rely on their first party which hasnt always worked out for them.  

Oh they cared but it wasnt their entire business model like it is with Nintendo,  if Nintendo fails in the gaming industry, Nintendo will struggle to exist.  Not true for the other 2 companies. 

Some rumours say it's slightly more powerful, others say it is significantly more powerful.

At this point, no one reallly knows, so why are you talking as if you do? You've got inside information?

It doesn't matter. No business is happy about losing millions, much less billions. I doubt their shareholders are happy about it.

Nintendo have made so much profits that they are in a position where they can soak up one or two system flops like GC and still have money to go on since even with a GC-like flop they will be making profits (as they did with GC).

No I already pointed out we are alking about a business, if you go into a business and tell them that all that matters is sales and not profits, they'll probably tell you to leave.  Saying that they beat Nitnendo worse, while ignoring that Nintendo trounced them in profits is ignoring a big aspect of the buisiness, sure they sold more this gen than Nintendo did last gen and the one before, but they did it while losing more money, not a good idea for long term success if you are business.

Except as we saw with the Wii that argument is false, as they can dominate on the strength of their first party alone, the highest selling games around, and without needing a lot of power, and as we know, Nintendo tends to be revolutionary and even disruptive with its systems, things  that MS and Sony can't match

true and if shareholders aren't happy, eventually a company will close down a failing segment

I dont  care when it comes out I wont buy a next gen console until its under $300 & in the year 2020

This is what I believe as well, Sony and MS will be the only 2 in the "next gen," becasue I don't see Nintendo pulling out a console that is that much more powerfl than the PS3, when the PS3 itself is still $300.

The blue-ray player jumps the costs up in a PS3 considerably compared to 360.  Nintendo doesn't necessarily have to use a blue-ray drive.  At this point in time, Nintendo could easily double to triple the specs on a PS3 without paying much more in hardware costs.   Nintendo actually can't release a console that is only the power of a PS3 or they might actually get mistaken for a current generation console-- Nintendo has to give core gamers that own both a PS3 and a wii a reason to invest in the next Nintendo console.