Or, you know, not?
Pakistan doesn't need such heavy fighters. PAF will go for what is best for its needs.
You think the US is being so nice, and just handing you technology that it doesn't even trust its closest allies with, without strings? Even if you paid a trillion dollars per F-16s, the US would still use it as a political leverage.
That is how the US works, it uses defense deals, economic ties, investment, and aid to get what it wants. India is a tool for the US, and its a shame that India doesn't seem to be learning from Pakistan's mistakes.