Which is why instead of a 1-to-1 proposition, be it lasers, SHORADs, SAMs, MANPADS etc. I suggested using good ol' ack-acks as a cost-effective alternative, maybe even an actually effective countermeasure against swarm attacks.
.. again, there is no "cost effective" counter to saturation attacks.
That's the whole point of a saturation attack.
And no, 'ack-acks' are not effective against anything, let alone AI enabled swarms of drones & CMs.