Getting the control signal to the point of application might be OK, but you still need to get electrical power there as well.
Short of direct, line of sight microwave transmission to each consumer, I don't think there's currently any other viable way to transmit useful levels of electrical power to discrete consumer points other than by cabling & I can't see the point in setting up microwave waveguide systems in a plane & converting power to & from microwave form to zip it about the aircraft when you can just run a lighter & more flexible cable.
And if you're running a power cable, why not just superimpose a control signal on top of the power transmission?
Feel free to correct me if I'm not fully up to date.......