Is this 100% true? I don't know much about RF jamming, but isn't it sufficient to fix on the strongest source of the RF signal you're interested in and guide a cheap penetrator at it?
DARPA's Exacto bullets are doing that with optical guidance. Would it be that much harder with radio guidance?
The jammer is a NASCAR, get to the track, turn left, make noise. Its remarkable how simple the psuedocode will be to write and debug.
The anti-drone missile/drone is a high speed police pursuit full of all kinds of adaptive tracking and fail safes and IFF (yeah well you hope it'll have IFF) and low latency judgment calls and 3-d interception math and classified anti-jam anti-flare and predictive algorithms in case the target has anti-interception code.
But I don't know if that's the only solution if being economical ends up being important.
Spike strips are really good at stopping cars, especially if they're running around a track in a circle.
That being said, there were also stories of anti-radar missiles being redirected by modified microwave ovens during the Bosnia-Serbia war. Can't find a solid link to that thougn