It has never been true that people who’s valuable skills are made obsolete by shifts in the economy will find jobs that pay more. It does not matter if that shift was driven by technology or changing consumer preferences. Many people in this category will never achieve their earlier level of economic success. Creative destruction is what this process is called and it deserves its name.
Creative destruction is cruel, but every worker today owes their job to earlier waves of innovation. The oil workers that you talk about would not have the high paying jobs to lose if earlier waves of innovation had not occurred.