Hybrids lose so many benefits of a pure EV vehicle.
EV drivetrains are much simpler. No complicated transmission or ICE. Easier to produce, scale, and maintain.
Hybrids require all the complexity of both systems, and the weight.
Even for an all-electric car, it'd be nice to have a small gas engine to drive a generator to charge the batteries if you're too far from a socket.
Meanwhile every car I've ever had has suffered from window motor failure.
That said, the best vehicle in that style that I can think of, the Chevy Volt, does actually allow the engine to drive the wheels and has two planetary gear/clutch systems. On the plus side, the gas engine is expected to need much less maintenance than a regular engine that's used in a much wider power range.