[p_j_w]

The cynicism may come from the fact that no one has been able to generate system level break even on a fusion plant in a lab setting after decades of work. How can one be anything but skeptical that it'll be commercially available five years from now?

[hoseja]

A lot of it is because nobody has actually really tried in a serious enough way. Nuclear technology would also be a pipe dream without the insane frenzy of mutually assured destruction.