The idea is that a foundation plays the role of an oracle. It sees what is happening in the outside world and can help the network not only against vampire attacks but also against social attacks.
If we embed the mechanism in the network itself (this mechanism should not only increase the yield of new tokens for farmers, but also increase the upload of new data so that the network can grow faster than another vampire network) it will not know what the attack is - why people have reduced data uploads and why are farmers declining? - because there is a second network carrying out an attack at the moment or because religious leaders have forbidden believers to use the network?
The oracle can differentiate between the two and react appropriately.