I think these articles and this thread are missing the most important factor and that is which target market is growing and which is shrinking. To say that Nintendo is targeting the same group as Microsoft and Sony would be a stretch if not false altogether. Microsoft and Sony are primarily technology driven companies that have to be at the forefront flexing their muscles. This image is important to their shareholders.
Look at Google who just announced a >80% increase in their business as well as tremendous growth in profit. Yet their stock drops 9%. This is because the expectation was not met. What the industry and investors look for in Microsoft and Sony is vastly different than Nintendo. We've known this for a while now.
Microsoft has a particular interest in market share at this point because it is swimming in money (look at their distribution of dividends in the past year). Their shareholders are not looking specifically at profits at this point, they are looking at emerging and potential markets.
We know the Sony story as they are essentially up against the ropes (in regard to their overall business model). They have the most to lose in the next generation battle.