One of the reasons no strong alternative to the current power generation/allocation system is that the Powers That Be have a vested interest in maintaining the status quo. Big Money is invested in the current setup, not to mention the lobbying that they fund. No one wants to be the odd man out after a shake-up caused by some alternative energy source made viable.
Tuor
The Powers behind The Powers That Be, to wit- the bankers and venture capitalists, will put their money into renewables or into anything else the moment they figure out that they can make more profit with the new thing than with the old thing. It's like that Super Carburetor, that TPTB have Kept Hidden. If there were such a thing the company that had access to it would make tremendous amounts of money, would own the market for cars, at least for a while. No group of Industrialists can successfully agree to sit on such an invention because that implies that it is not patented (or it would be public knowledge) and some nonmember of that cartel could learn about it and put the cartel out of business.
This world runs with a market driven economy; it is not a mercantile system with government enforced monopolies.
Learn some economics.