This would only be the case if every research job was in a university and in tenure track, which is definitely not the case. Many research positions are in ind

This would only be the case if every research job was in a university and in tenure track, which is definitely not the case. Many research positions are in industry, or are postdocs or non-tenure track. Besides the fact that many countries don't have anything similar to tenure. Also, not everybody on tenure track reaches it.