I feel like the synthesizer--CMI Fairlight, Moog anything, Synclavier, PPG Wave, and just the general concept of modular synthesis--are pretty staunch competitors. Yours is certainly a fun and fair take, and arguably the electric guitar+tube amps birthed so many genres (blues, soul, funk, rock, punk, metal, etc) where as synthesizers remained pretty niche with their contribution to experimental music and pop music, mixing in with rock funk and disco, and the titan of EDM that grew out of that.