Eh....cancelling a not very good design in 1959, well before most countries realized ground controlled interceptors were kind of a bad idea might be the real story here. The US (and the Soviets to a hilarious degree) went down the other path for many more years, at high cost; the USAF (Fighter side) didn't truly recover from those choices until the late 70's - early 80's IMO. (Vietnam being the real tutor here)
If you're interested in the subject, look up the performance of the beam riding missiles in use, and the limitations for deployment of the AIM-9B - those do a good job highlighting the extremely limited envelope in which these weapons could be deployed, and the difficulty in getting the aircraft in that envelope.
If you're interested in the subject, look up the performance of the beam riding missiles in use, and the limitations for deployment of the AIM-9B - those do a good job highlighting the extremely limited envelope in which these weapons could be deployed, and the difficulty in getting the aircraft in that envelope.