Suppose you want to light a 60 Watt light bulb with broadcast power. The lampshade is built to be the reveiver antenna, and is 10 cm (about 4") in diameter. A 10 cm (0.1m) circle has an area of pi*0.1^2 = 0.01 sq. m. (m^2)(actually 0.0079, but I'm going to round off). That means you need 60W/0.01 m^2 = 6000 W/m^2 power density to light the bulb.
If you are 1 km (about 1/2 mile) from the transmitter, the tramsmitter needs to generate P = 6000 W/m^2 / (4*pi*(1000m)^2) = 7.54 x 10^10 Watts = 75,400 MW (meagwatts). This assumes the power is broadcast spherically throughout the atmosphere, and there are no losses. The Shoreham nuclear plant was supposed to generate only 400 MW. If you are 10 km away (about 6 miles) then either the power transmitted has to increase by a factor of 100, or your antenna has to be 100x larger.
A human body has a surface are of around 1 m^2 (or so). A typical microwave oven uses 600 W. I don't know about you, but I would not like to have 10x the microwave intensity of my oven going through my body constantly! Although, I believe I would smell delicious!
As far as makng money off broadcast power goes, I'm sure some kind of license arrangements could be made. Like for software or music downloads maybe. So that's not a real hold back.
Conspiracies Spoiler......
As we know, the real purpose of Tessla's tower was to open a hole to the Otherness, as the small model did. The full sized tower (see my avatar) was supposed to open a large enough hole to free Rasalom from the Keep in 1904. Luckily things went wrong. Probably Glaken played a role in that.
You really only need three things: WD-40, Duct Tape, and a pointy stick. If it's supposed to move and doesn't, use the WD-40. If it moves and isn't supposed to, use the Duct Tape. If you want it to move and it doesn't want to, use the pointy stick. The rest of life is easy.