Eminent domain is always essentially a court of last resort, purely from a public interest standpoint. This is something that can be used by regulators and government if there's a sense that an overall national need is causing an imperative desire to see that infrastructure go ahead. In practice, what will happen in planning a project is that the company will actively work with landowners across a corridor or right of way and seek to negotiate an agreement. For the most part, the vast majority are agreed to easily and readily.
Honestly, I can't recall examples where eminent domain was actually applied. It would be no different if a new electric train system was going in or a new local road. Any kind of public infrastructure in a modern society does require that sort of facility for society to function effectively. I want to stress as well that it was Mr. Bernstein's point, not my own, but I was reflecting that it is a component of modern society because critical infrastructure is so fundamental to our being able to succeed.