Could you paraphrase the last sentence "there has always been room at the top.’" in the following story?

Does it mean that "there has always been room at the top position like CEO, so you should not give up entering in the account job market. Set your goal high. ??

“I was in my last semester when I saw an article in the Dallas Morning News about the accounting field becoming overrun with graduates, and as a result there were no jobs for new graduates. As an accounting major who was about to enter the job market, this was really bad news,” Ratley said.

“My audit professor was an adjunct professor who worked for one of the big eight accounting firms at the time. ... After reading the article, he threw it in the trash, looked at me and said: ‘I never worry about stuff like this because in every place I have ever worked, son, there has always been room at the top.’ …