New Delhi, April 28 -- India's push to expand public Wi-Fi may be running into a problem: users expect it to be free, making it hard for service providers to build a sustainable business around it, said the Telecom Regulatory Authority of India (TRAI), in a consultation paper released on Monday. In the paper, the regulator cited commercial viability as a key reason why deployments have lagged targets. "The widespread expectation of 'free Wi-Fi' acts as a significant psychological and economic barrier," TRAI said, noting that even small charges of Rs.5 to Rs.10 for Wi-Fi often face resistance from users. P13...