This is what Thomas Alva Edison, the inventor who gave this world electricity and electric bulb thought about the potential of solar, wind and tidal energy way back in 1931. Simultaneously he had a premonition that the human race would commit the folly of waiting for the drying up of all our fossil fuel resources before tackling the scientific and technological problems associated with harnessing of renewable energy.
There are others like George Porter, Ralph Nader and Joseph A. Tainter who gave their own assessment for this delay and how right they have been.
I have no doubt that we will be successful in harnessing the sun’s energy… If sunbeams were weapons of war, we would have had solar energy centuries ago.
George Porter, an English chemist (1973).
Any change from the long established practices and technologies are resisted by cartels of nations,industries and even the technocrat lobbies for reasons of self interest and fear of losing on their monopolies and importance. This is why the nuclear nations are strongly touting for nuclear energy in spite of the universally known fact that a nuclear power plant is a ticking catastrophic bomb and has massive problems associated with disposal of wastes, dismantling of old plants, danger of nuclear fuels passing into the hands of terrorists and what not. Joseph A. Tainter, an American anthropologist has very aptly summed this in the following lines.