How does Astrophage change Earth after everything is over?

At one point in the book, Steve Hatch (the Canadian with the Beatles) talks about how amazing Astrophage is and how it can power homes for hundreds of years.

After >!the Beatles return to Earth and the planet is saved!<, how do you think Astrophage changes the world? Does it change it for the better? For worse?

For example…

• Other than the obvious application of revolutionizing the electric grid, what else will it be used for?

• How often does it cause disasters like >!the explosion that killed Shapiro and DuBois!<?

• Is there induced demand that leads to new kinds of energy shortages?

• Does it become a traded commodity?