First they'd have to get fusion power to produce net electricity, and then for it to produce it economically compared to other sources. We've made progress but it's been decades in the making and I'd be willing to bet will be a few decades more, even if I do expect it to get there one day.

But what's dystopian about fusion? It's just another energy source. A bit cleaner than some of the older ones, but not really anything fundamentally different.