Aviation has always been a difficult business with very few players having built a profitable enterprise. Within that, long-haul has been even more complex. So, when an airline such as IndiGo, which has been stupendously successful in the domestic market, says it wants to go long-haul, one can’t help but have mixed feelings. If you have executed a business model to perfection, why stake your core by venturing into something where the success rate is very bleak. That is what history tells us — no successful domestic airline in the world has really made a dent internationally. But then, that is also the spirit of enterprise itself — nothing new will ever be created if you side with history, fearing failure.