Did they have 100% of the video card market? I could just as easily say that NVIDIA still has 100% of the PhysX market, which means about as much as what you said.
How much of the discrete video card market did ATI have during that time? How much? Look it up. :whiste:
Could you please return to school and take some maths classes.
People have explained clearly multiple times why NV is taking away marketshare.
Whatever your post here is rambling about is meaningless and doesn't relate to your original post anyway.
Lets do some examples, yet again.
1) AMD has 100 card sold, all DX11, representing the entire market. 100%.
2) AMD sells another 20 cards, while NV sells 10 cards in the next time period (say a month). Now AMD has 120/130 cards, or 92% of the market, and NV has 10/130, or ~8% of the market.
3) AMD sells again 20 cards, NV sells again 10 cards.
Now we have AMD at 140/160 and NV at 20/160. This means NV has a 12.5% share of the market, while AMD has an 87.5% share.
Despite AMD outselling NV in consecutive months, at a rate of 2:1 (20 cards to 10 cards), NV has increase its share of the market each month.
If we continue this trend, the next month NV has a 15.7% share.
The next after that, it's 18.18%. Each month, despite AMD outselling NV at a 2:1 ratio, the NV marketshare will continue to increase. This will happen until it evens out at around 67% to 33%
This would happen when enough cards have been sold to make the initial total dominance negligible (your original 100 AMD cards are only a tiny fraction of total sales).
AMD had 100% of the DX11 market before NV launched any DX11 cards.
Fact.
This is where the 100% comes from.
All further numbers are totally invented, and serve only to show that NV will continue to increase their DX11 marketshare until it settles at approximately the ratio of AMD to NV sales of DX11 cards, whatever that ratio is (which is unknown).
The continued increase in NV marketshare indicates nothing about relative sales of the two cards, because we do not know the original lead AMD had over NV when they made up 100% of the market, and we don't know current shipments of each companies' cards.