DX10 WILL come With or Without competition.
After that who knows.
Supposedly DX10 will be incorperated into Longhorn because there are some MS effects that will require it (which actually makes me shiver [anyone remember security hole in DX9
😱 ).
There will always be competition, even if there isn't a competitor. That may seem to make no sense, but when the development lags, and ease of entry is low enough to show good return, you will see new entrants who will take market share. Sure it's easier for incumbents to defend their position, but should they sit back, then there's nothing.
I think what we are more likely to see is that regardless of which companies compete, the hardware will outdo the software by leaps and bounds. We may have DX10 parts long before the release of DX10 itself, and that would be WAY before games actually used it. Just look at the DX9 situation, it's been more than a year, and how many games are out there tha one could really call DX9, maybe a handful?
The fact is that nV decided to go it's own way, and go AGAINST the DX9 and HLSL standard and try to forge their own exclusive 'cult' where only THEIR parts got THEIR benifits. Hopefully they learned from this, because if nV HAD succeeded, then you WOULD see less competition, because one company would hold the key to the kingdom (whereas MS controls the software, but not the hardware, and even then OpenGL is still around, just in case

).
The main thing is that while there is no use in arguing 'whos the better' there is a point in arguing who's done people wrong, so that hopefully they DON'T do it again, and other companies also learn that by example. This wasn't some innocent design error or that nV was trying to give their cutomers way better visuals, this was a play for power that didn't work out, and their reaction to that misstep was to do one more insult by 'floptimizing'.
Competition is good, but this actually describes the OPPOSITE of what you are saying.
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