My son worked for a time for Crystal holidays as a kind of locum tennis coach. If a coach fell ill on a tennis holiday then they flew him to the resort to take over for the week or so.
The first time he went we got to the airport to pick up the tickets and saw his name was printed wrongly, so they changed it and issued new tickets, 30 seconds work, in doing so they had made another mistake so he told them and again it was sorted in 30 seconds. As an employee he did not have to pay.
My point is that changing the names on tickets is not difficult, I think the airlines use 9/11 and increased airport security to make a quick buck. Just as they do with the liquids rule, they charge the earth for a drink airside and make a very good living out of it.
I do understand about security having to be tight but to overcharge passengers at every opportunity seems to be totally unethical. If someone turns up at an airport with a passport and tickets with only a letter or two transposed or wrongly typed then to charge them £50 or more for the change is extortion, the banks have been told to stop evercharging it's time the airlines got the same message.