Re: Why arent boutique amps used for all our favorite recordings??
Fwiw...
Allan Holdsworth - Sundown Amps
BB.King - Lab Series
Santana - Dumble
Terry Kath (Chicago) - Bogen PA head
Tom Scholz - ...take a wild guess!
Foghat - MusicMan
etc.... while I agree the vast majority were recorded with Fender/Marshall/Vox..you might be surprised to discover who really used what!