it certainly is the case that as uptake of an Internet service increases spare capacity comes under strain - so you have a cycle of building a network (and various components of the network) getting uptake and growing the network. However this is understood in the planning of an Internet service and in actual fact we are working on additional capacity coming on stream before the launch.
one of the reasons it is best to attract tech heavy users etc ... first is to get the business under pressure to begin with so that you grow on heavy usage cases rather than trying to pad your revenue on an unsustainable business model.
Our real guarantee that we will continue to deliver the best possible experience to users is our cancellation policy which allows a person to vote with their feet for another network. The DSL market in SA will reach full maturity when there are sufficient service providers who offer quality support, reasonable prices and month to month product terms. In turn we are a guarantor for a quality experience at colleague-competitors who offer quality support, reasonable prices and month to month product terms.