Laser turrets near highest-value targets?

It becomes defense in depth though, perimeter defense is no longer enough. Thats kinda new.

Laser takes as much as 10s to disable a single plastic drone at a distance of ~400 meters. The slowest drone flies at 20 m/s.

So realistically a laser drone weapon can eliminate just a couple of drones until a third or a fourth one comes through and destroys your turret.