When doing business there are 5 main pressures for any organisation mate. Competitive pressure, Power of suppliers, power of buyers, New entrants and substitute products.
So from Dialog's point of view Airtel is a new market entrant. So they should know and they should have strategies to fight with it. Eventually it will be a competitor. Then again Dialog should have strategies in place.
From Airtel's perspective I don't think they'll be able to reduce their costs that much due to the power of the suppliers. There's a limit which you can reduce the price of a product while gaining a profit!
If Airtel provides much lower costs then I'm sure Dialog will adopt to the same structure with the same infrastructure. Because if Airtel can do it, then Dialog can do it too.
Low cost strategies don't provide any sustainable competitive advantage.
And about the loss of DialogTV: Just wait and see I guess that IPTV will also face a loss in the future. Because our backbone infrastructure is not too strong and there's no way of implementing a proper fibre optic infrastructure with the current security situation in our country.
Furthermore, DialogTV has been in operaion for just 9 months. Due to the high initial investments it has to be a loss definitely. You can't expect profit within 1 or 2 years after a massive investment. Eventually they will earn profit. That's the nature of 'business'
If Airtel launches its operations in Sri Lanka, Dialog should use their 'customer loyalty' to gain the competitive advantage. That's the only viable method I can see. Or else the next one is acquiring Airtel if it becomes a bitter rival. It will cost a huge amount of money. But then Dialog can have all the profit in the long run.
But from an analyst's perspective I would like to see more and more competitors in the market which will diminish or rather reduce the monopoly!