Something that pretty much everyone in the world wants to see happen, but still faces a few technical hurdles, is much more likely to ever happen than something

Something that pretty much everyone in the world wants to see happen, but still faces a few technical hurdles, is much more likely to ever happen than something that is already possible but not enough people want, it seems to me. Achieving ubiquitous nuclear power is more like achieving ubiquitous electric cars than achieving ubiquitous flying cars. It’ll probably happen any decade now, vs maybe never.