All memes aside, the Russians are the only developers of mobile GBAD systems other than maybe the West's Stinger MANPAD. They've sold air defense systems to every corner of the planet and their systems have been involved in a lot of conflicts. I'm referring to systems like: S300, Tor, Buk, Pantsir, and Osa among many others.
Drones are the ideal target for some of the aforementioned systems. Yet, we see Ukrainian drones flying into even the deepest regions of Russia to strike critical targets.
Is this failure to destroy targets inherent to drone saturation attacks or are these systems just not as good as everyone previously thought? Because there really isn't any alternative other than the extremely expensive Patriot system which is really only good against ballistic missiles. Maybe Russia's huge size is the issue?