At least, that is verifiable; Tesla pushed the scientific envelope (to say the least,) but no avant-garde scientist is perfect (hence those of Teslas day conceived "æther" to explain lights wave-particle duality.) So, depending whom you ask, Teslas Tower was either one of his invalid theories, or suppressed by a still extant conspiracy to dominate humanity by depriving it of free limitless power. It dovetails nicely with the awful way Edison treated Tesla in the AC/DC controversy, and the awful way he treated REAL inventors generally. The main reason Tesla and many left GE was Edison claiming patent rights on everything employees developed, whether in his lab or their garage: The ONLY way a GE employee could personally obtain a patent was to leave the company; otherwise all their discoveries were Edisons intellectual property. So we could say he pioneered exploiting scientists (at the expense of innovation; scientists and engineers have been known to sit on new discoveries for DECADES until ready to leave their employers to get their own patents,) if very little actual science.

The premise of Teslas Tower, as I understand it, was that the towers would convert EM waves into electric current (which is where the ionosphere comes into play,) then pass it through everything connected to the tower. Not only that, but, because the tower formed a circuit with connected devices, when it completed the circuit by arriving back at the tower, it would be converted back into a radio wave and transmitted to the next tower. Each person on the power grid would, in succession, use each and every amp of electricity, all coming from the ionosophere as radio waves rather than from a fuel consuming ground based generator. You can probably see why perpetual motion conspiracy buffs eat this stuff up; that would not TECHNICALLY defeat the Second Law of Thermodynamics, but practically would.

Meanwhile, of course, homes and businesses are already connected as a single circuit, just not by towers. That is what the power grid is, after all, and much of the crux of the AC/DC debate (an irony of Tesla Tower conspiracy theories is accusing energy producers of suppressing DC current.) Circumventing thermodynamics is not so simple. The basic idea of sourcing the power from the ionosphere rather than private power generators, however, might or might not be tenable; perhaps Tor could tell you. It might be interesting to calculate whether humanity uses more electricity than solar flares and the like inject into the ionosphere. It is certainly poetic to imagine the aurora borealis finally overcoming the challenge the Second Law has presented since life first emerged on Earth.

Still, much as I enjoy a good conspiracy theory, in this case I must believe that if it could be done, people would be doing it. Until Big Electricity threw their corpses over Niagara Falls, anyway.