Mainly? Thanks for inferring that the teacher who taught me English was negligent, never liked him so any negative point shall count. For your information he was not an Englishman so describing him as an 'english teacher' may be misleading.

Your sentence however, mainly or otherwise, presupposes that innovation and diversity is an exclusive preserve of Safaricom while yet Airtel has just entered the market and we are still to see the extent of their innovation and diversity or lack thereof.

I'm not sure if any of the major telecom companies can ever fully recoup the cost of building the networks. It's more a game of hiding and restructuring debt. That's OK, because the people win- the infrastructure is built. But I think that telecom is largely like other "big infrastructure" projects. At the end of the day, no matter what they charge, they don't really make money. It's all about indirect earnings- a CEO gets paid this, a COO paid that, governments get their tariffs, contractors get some, vendors get some, resellers get some. But at the end of the day, the cost of building a reliable, fast network, especially when competing in the data market which has relatively low barriers to entry (face it, anyone with a a Wi-Fi access point, some slick caching software, and an internet connection can, in a way, compete). No, I think that telecoms are all about cash FLOW.

Thoughts?