I agree that wireless power transmission, in the utility sense, is not practical...
Not to bust on your beliefs Joe, as history has taught us, there was a time where everyone thought the world was flat, man can't fly, nor could walk on the moon. When TV and telephone came of age, TV was wireless and telephones were connected by wire. Now we have cable tv and cell phones.
A few years ago, lithium batteries were practical for watches and calculators while the critics were saying they were not technically not possible for greater things. Now they are powering cars to breakneck speeds and distances while making planes much more efficient.
A "mad man" theorized power could be transmitted wirelessly, powering wingless aircrafts with an ion drive, radio, radar, the induction motor, the Tesla coil, alternating current dynamos, arc light systems, electric vehicles, concepts such as the use of X-ray machines, telegeodynamics, robotics, and early computer-logic principles. All of theses all have practical applications today though some have small applications for now.
Granted, we may never see it in our lifetime but then again we would have none of these if it was the bold pioneers like Columbus, the Wright Brothers, Edison, and Tesla saying yes when everyone else said no. We be still in the dark ages living on a flat planet just starring at the sky if it wasn't for the most daring.