There's no need for a motor; that's what the phased array antennas are for.

802.11ac packages already implement MIMO-based beamforming, and I think there are already speciality 802.11ac packages using phased array for backhaul radio links. Phased array beamforming is a matter of size and processing power, but nothing different from cutting edge WiFi and 5G products, and not much different from what's already deployed in many laptops and cellphones. The entire software and hardware stack, including at the consumer level, is already capable of real-time, electronic beamforming. The technology for the Starlink terminals is well established and it could be done cheaply, it's just a matter of whether Starlink has the manufacturing pipeline primed.

Just like with rockets and electric cars, all the pieces exist and are relatively mature. It's just a matter of assembling them cost effectively, and that happens to be Elon Musk's special gift.

I know that, but there IS a motor. Elon has said this himself. what you are describing is far more expensive than a phased array with the scan needed for no motor. It is not a solved, inexpensive problem. 5G and wifi use significantly lower frequencies, which is much easier and cheaper to implement the phased array. Starlink is Ku and Ka band. There are no examples of a consumer version of these that is cheap enough. The only thing that came close is the oneweb, but that's only Ku, and it only exists in a Wyler tweet.