in that order we simply must develop power devices which use some energy present in the universe, such as cosmic rays.Tesla lost because the world wanted viable energy now, and what Tesla proposed was still in it's infancy.
Electric power made from cosmic or solar rays would be an energy source directly available to each individual, and it would make every individual more independent. This is not a question of politics, but a question of scientific and technological advance. Does anyone believe people will stick to today's energy sources, like coal, oil, gas, or nuclear power, forever? Science will and shall advance, that is a law of human history.
Would you not assume had his dream been a reality, that we wouldn't be using it today on some scale?