Standing on Flights

Those who have been to India might have noticed that in India, people are allowed to stand in the bus while travelling. I have also noticed that in New York subway trains. What about standing on short flights? The recent survey by Ryanair suggests that 60% of the passengers would do so when the ticket is for free. 42% would do so for half-charged tickets. The airline also considers replacing the normal seats by vertical seats that can be found in roller-coasters in amusement parks. Soon we can expect the IT employees going onsite to stand all the way, as the standing-tickets would come cheap.