It should be but the powers that be haven't allowed the proper investment in the Port city to ensure it services the region as it should.
The Nigerian expression, "You think you are doing me, but you are doing yourself" is really true in this instance
Because Igbos cannot utilize ports in the South-South, Igbos go to Lagos to conduct business and live. Now Yorubas fear Igbos will demographically take over Lagos. Going as far as ransacking Igbo businesses in the election. If they weren't so selfish, there would not only be less Igbos in Lagos, but also greater development in other parts of Nigeria - thus making the entirety of Nigeria far wealthier.
Igbos are the solvent of Nigeria