Until the Gramme Machine, electrical machines were milliwatt-scale classroom demos and lab curiosities. Gramme's breakthrough idea was industrial scale, and was the basis for Edison's DC "bipolar" machines which took over the world in pre-Westinghouse days.
E-field devices, or Static Electric motors & generators, remain non-industrial because the max field is set by gas breakdown, and gives low torque at that limit. B-field machines have enormous torque at their core-sat limit. How big is a 1/4 horse electrostatic motor? How heavy? How expensive?
Think way outa box! Perhaps things will change in LEO or "Belter" industry, where megavolt circuitry in hard vac environment is cheap and common, and where cooling of coils and cores is near impossible. Fab up some capacitive micro-layer "muscles" for a thousand-HP linear motor which requires cleanroom conditions and vacuum as insulation.