This is a preemptive measure after airtel started the same process in Ghana-West Africa I think safaricom is behind schedule they should have inked the partnership long time ago.
This kind of partnership where telcos form a new company to specialize in infrastructural development and maintenance have a coupled effect of reducing CapEx because of economies of scale
'......to the acknowledgment of the mystery of God, and of the Father, and of Christ; 3 In whom are hid all the treasures of wisdom and knowledge.' Colossians 2:2-3