It doesn't matter if the people with the war machines are the ones who control the grids,lines,pipes,etc.

The 'holy grail' will most likely result in further top down dominance. As god king tyrants demonstrate their continued uselessness to humanity by creating more powerful and destructive weapons and hoarding the infinite power supply for their own.

I gotta be honest, as amazing as the promise of limitless fusion energy is, I'm really not optimistic that it'll be a major or even an important technology for the energy sector, at least for the next 200 or so years.

The thing is, we already have fission power and we're struggling to use it right now. The biggest hurdle for fission is the upfront costs of building a plant, the time needed to build a plant (construction can take up to a decade), and ongoing costs. While nuclear power is probably one of man's greatest achievements, it's also generally pretty expensive. And fusion has almost all the same strengths and drawbacks, but bigger. I do believe we will achieve sustainable fusion, probably soon. But I'm certain that while it will "work", it will also prove to be the most expensive form of power generation with the largest upfront costs that the world has ever seen. And I don't expect those prices to come down for a very long time.

Personally, I think anyone who expects fusion to be some kind of miracle technology is kidding themselves. And if people really want a miracle technology in the energy sector, keep your eyes geothermal, that's the only tech I see that has any potential to become cheap, limitless, and constant.

I do think fusion will have good applications, but it will likely remain niche for a while. I definitely look forward to seeing spacecraft propelled by ion drives and powered by fusion, it would be amazing to be able to get to Jupiter and back on one tank of (xenon) gas.

nuclear is the current dream for capitalists. because fuel is controlled and power is a monopoly - nuclear is guaranteed to always be profitable whereas hydro, solar and wind tend to run at a surplus and collapse the market by going into the negative value. since power can't be stored, they have no choice but to supply power at no cost. with nuclear, they control the flow of power production and can always keep supply at the breaking point of demand to keep prices high.