Do you actually believe they care one bit about improving humanity with more power? They are currently doing everything they can to kill off our species and will soon flip off the power switch to kill even more. All this will be is an excuse to syphon off money into personal pockets. Our Grandchildren need this like a hole in the head.
Depends on who the "they" are.
Most of our present politicians, UN, the globalists, enviro-wackos, etc., unfortunately are exactly as you describe and as evil as you describe.
A few business people in the "they" position with real vision are perhaps interested, because there is big bucks in selling electricity.
The Chinese and/or Russians may be interested, because you combine the ultimate power source with the ultimate weapon.
The electricity would be beamed down with microwaves to receivers with feedback circuits to shut them down if they drifted off course for safety.
If one wanted to wage war with another country, re-position your generation stations over them and roast them to a crisp with pinpoint accuracy.
Whoever owns and uses the high frontier makes the money, controls the power and controls the world.
Having reliable, environmentally clean power is a side effect.