Tesla uses tried-and-true hardware technology. It's the way they put it together that's innovative. Even that is in some sense obvious... but nobody else is doing it.
Anyone *could have* replaced all the electromechanical control systems on rockets with computer controls, like SpaceX did. But only SpaceX actually *did*.
Anyone *could have* assembled an AC induction motor, IGBTs, commodity battery cells, inverters, put the weight at the bottom of the car, put the controls on a touchscreen. But only Tesla actually *did*. (Notably, Musk waited until *after* GM and Toyota crushed the EV1 and recalled the RAV4-EV, so he *knew* the existing carmakers weren't going to build electric cars.)