The Ukrainian counter-UAV industry is already seeing huge growth. The Gulf oil states attacked by Iran are buying.[1]
Strong counter-UAV defense requires an entire integrated low-altitude air defense systems. The US systems the Gulf states have purchased are high-altitude oriented, useful against incoming aircraft and some missiles. They have long range radars, but not enough of them in the right places for finding low-flying drones. They have expensive missiles like the Patriot, which works against drones if there are not many of them. There are many incoming drones. Ukraine alone is up to 7 million drones a year.
Aerial warfare is changing in a big way. It's starting to look as big as the transition from battleships. Big airfields are big, fat targets.
[1] https://www.thedefensenews.com/UAE-Qatar-and-Kuwait-Seek-Tho...
Volume is the real threat from drones. Any competent air defense system can shoot down a drone, which is much, much easier to shoot down than a conventional cruise missile, which is in turn much easier to shoot down than a ballistic missile. But you can't task interceptors that cost $200k to shoot down drones that cost $20k for very long. Even if they all hit, and they won't, you'll quickly exhaust your magazines.
In Ukraine both sides are choosing very carefully when and where to expend expensive interceptors, and I think as time goes by we're going to see a lot more passive defenses, i.e. sandbags and bunkers.