Even after increased fare,its still very cheap. I mean mostly people travel 3-4 times a year on average.
And railways is safe for atleast 20 years from airlines bcoz there is not much infrastructure on aviation sector itself, that can deal with such traffic. According to indigo airlines they need 400 new planes to take 1% of Indian railways. Which is a lot considering that they have 102 planes right now, and has biggest domestic fleet size after air india