During the Internet utilization one common problem observed is the lack of constant of connectivity of Internet. On many occasions, user faces disconnectivity in a prefixed working duration. This factor affects the market share of customers of an operator. Disconnectivity is classified as favoured and non-favoured according to restart call attempt criteria. This paper presents the Iso-share analysis of Internet traffic between the two operators in the presence of favoured disconnectivity as a cause. A Markov chain model is used for analysis and simulation study is performed to support the findings