Black Eagle,
Bristow has never had a monopoly in Nigeria. A short two years ago there were two companies of almost equal size until the (almost) demise of Aero. The only company able to step in and pick up the pieces was Bristow. That they ended up with an 80% share of the market was more by accident than design.
at the expense of Nigerians
If Bristow was forced out of Nigeria by a combination of corrupt practice and bias of the authorities it would truly be at the expense of Nigerians. Over the years Bristow has trained in excess of 300 Nigerian pilots from ab-initio and a similar number of engineers. Some of these pilots are now working for Caverton. Caverton has not trained one single pilot nor, as far as I'm aware has any intention of doing so.
Therefore, be careful what you wish for, it may come true!
Cyclic.