you could wait more months for the new nvidia cards
We cannot wait. When the new nVidia cards arrives, there will be no profitability for mining the Etheruem.
there will be at the beginning for those that buy them fast enough, a small windows for a better profit
remember that big farm cannot simply replace all their gpu with new one, it will cost them tons of money, they would still use the old one
and because of this small farmer may have an initial advantage with new gpu
That is true, but even for the small miners like us, the electricity price is so high and the GPU price is too high, we might not ROI.