If government didn't kill Nitel, MTN and co wouldn't have made it very quickly. How can you say competition killed Nitel? Nitel had mobile phones as far back as 1990's, NITEL had the backbone infrastructure, they had the assets already in 36 states..
Nitel had everything! What was lacking was the will power and operational efficiency to make it function effectively.
NITEL would have existed side by side with these GSM operators, NITEL 's existence would have created a more viable competitive environment.
450,000 existing customers, all they needed to do was handover mobile phones and sim cards to all of them.