I find ground-based systems more effective as a defensive measure, tho. No limit on weight, no added energy consumption just to be ready to react. I think germans showcased some autocannon like that. It’s easier to spot and destroy, but also easier to maintain a drone-less perimeter.
On the other hand, flying antidrone fleet can be an offensive weapon. Everyone watches the front from the sky nowadays, so quickly pulling their eyes off before pushing forward can be a lifesaver.