think it through

[marycatelli]

It's all very well to have different things in your world-building, even things that would be impossible in the real world. But think it through?
You want epic fantasy, with vast battles, in the modern world with cell phones, motorcycles, and laptops.

Do you know what battles do to the factories that make cell phones, motorcycles?

And no, they wouldn't, for some chivalric reason, spare the factories. All of those are tools of war. They would be treated the next priority of attack, after munitions factories.

Even wandering dragons would make keeping a factory going difficult. Good defenses would help, but would run up the cost. Your dwarves might work underground for good reason.