It is a risk, but not as bad as you suggest, because (1) in work you can get an incremental sense of what is worth specializing in, and (2) there's always some

It is a risk, but not as bad as you suggest, because (1) in work you can get an incremental sense of what is worth specializing in, and (2) there's always some degree to which skills are transferrable and experience is impressive even to someone who doesn't need you to do what you did again.