Nobody plans for decades because nobody can afford the risk.
On a personal or organizational level there is no point in making investments that will turn profit over the course of decades if over the ~5yr horizon there's there's always the looming risk that the government will kick your craft out of the country at the behest of the people.
What happened to all the men who specialized in casting steels? What happened to those facilities? What happened to those companies?
The math is simple and they teach it in every business school in the country.