It will never be for the same reason that it never was. You cannot "meter" power from radio waves, (at least not easily) so how would the utilities stay in business?
Contrary to the term "free energy", this is not some idea to create energy from nothing. The energy still has to be produced in conventional fashion, it is simply trasmitted wirelessly instead of over power lines. So the utilities still have to burn coil, fission Uranium, dam rivers or draw from the wind and sun. Who is going to pay for it?
(Also note that Tesla coils are INCREDIBLY inefficient. A modern equivilant is a radio transmitter; a 50,000 Watt transmitter might deliver 5mA to your radio receiver. If 10,000 people are getting the same power, then the radio transmitter is still only 1.2% efficient)
Solar Station Construction Plans by Ben Peterson -- ebook