At first they would offer free service. Next they would encourage us or force us to use the service. If that doesn't work they will start the emotional game that you are helping in the development of the nation. In the end when you form a habit to use the service they start charging you for it.
Any UPI transaction of more than INR 2000 will be charged 1.1% , starting 1st of April.Source.They wanted to digitalize India but they never disclosed the hidden agenda. Now some of you would say it for the cost maintaining the servers. Do you think such an excuse can be given by a Bitcoin miner? Another reason why government cannot beat the Bitcoin ecosystem is that there is nothing hidden and nor the ecosystem allows you to hide.