New rules of travel

In response to this article I agree on nearly all but one point. IATA’s foresight to replace paper tickets with electronic tickets has been widely accepted as being far more convenient for the whole industry. However the airlines are raking in the cash for any amendment. When passengers need to alter flights booked and paid in advance,even if the fare class is available, they are charged hefty reissue and services fees. While it takes a travel agent or airline reservation staff only seconds to make the alterations, the airlines insist on unfairly charging these fees. Can someone explain what is it that is being reissed, since in reality it is electronic. Originally the e ticket idea was sold to the industry as a convenient way to deal with flight changes, now it just a added revenue stream.