GGTharos, I agree with you, but for me it is inexplicable to withdraw from 2025.
We know that any new program in our time gets even decades with delays and costly changes. And I do not think it would withdraw from 2025, surely there will be a structural upgrading.
USAF needs these fighters and those F-22s that has the size of the USA is very little.
What will address the PAK FA if sell in some countries and happen to need to address them? Sure no F-35...:P