Once again simple rule played significant role.
One runway, one ATCO, one frequency, one language ( not issue here- but there are again number of phraseology deviations)
Yes I know, system is more sensitive to money than to safety.
N.B. what I find interesting, systems that are richer are more prone to safety savings.
You will never find in " small and poor " country one ATCO working on 3 rwys withIin busy CTR .