IIRC US stopped SAAB offering Viggen to India. Would they block F404 in the same way now?Those are just Washington DC think tank talking points, in 10-15 years the US isn't going to play as nice with India as they are today
As soon as India starts to pose a threat to their $$$ they will hamper such efforts
If only India had put the resources into getting Kaveri to work, the question would not arise.