The conglomerate is committing fresh capital to aviation infrastructure, convinced that India’s under-penetrated air travel market has a long runway for growth   The Adani Group plans to invest ₹1 lakh crore in its airports business over the next five years, signalling a firm bet on sustained expansion in India’s aviation sector. The investment comes as commercial operations at the long-awaited Navi Mumbai International Airport prepare to begin on December 25. “On the airport