Weblog:   Why MySQL grew so fast (news from the 2004 MySQL Users Conference)
Subject:   Dual Licensing
Date:   2004-10-27 07:10:34
From:   Grumpy
Response to: Dual Licensing

You are correct in stating that the airline needs an information system. However it need not be MySQL, it could just as easily (for the sake of argument) be Postgresql, so they don't need to pay the licence fee. If MySQL demanded the licence fee, they have the option of taking their business elsewhere and very likely would. As Larsd pointed out, the airline is not tied to MySQL whereas the game developers are.