On the other hand, unlicensed VoIP apps would not be allowed to advertise in India, whether that's on TV, billboards, newspapers, or popular Indian websites. They would likely not be allowed to be sold in the Indian locale of Google and Apple's app stores. A communications app that few have installed is close to useless - even in countries with significant freedom, we use Facebook Messenger, Hangouts, Whatsapp and Snapchat over alternatives not directly controlled by major companies, because the free alternatives don't have the funds to convince all your friends that they're legitimate.