I would have expected this to be table stakes at running large busy airports.
On publics airports? Where planes have to land all the time? Can they be pinpointed exactly on one specific target without disturbing the others? And this is assuming there even is a remote-control to jam.
What you can certainly double down on is tracking and close to the ground monitoring. And it would be surprising if this did not give results (over hundreds of sightings) as to who is launching them and recovering some hardware. Drones fall off pretty easily and it might be hard to repeatedly recover drones without getting caught if there is a surge of police around.
But yes detection is key and surprising airports don’t already have this. This is not an exactly new phenomenon.
The bigger issue I assume is probably that even if you react very quickly the drone might be already gone already anyway.
In Paris they developed an electronic barrier wall for drones. Yes maybe these are autonomous enough that when the link is cut they continue on their mission but I think something is better than nothing.
These tools are widely available.