I know that my customer's idea seems a little silly, but the point is what is going on about the law with packages that developers and dealers stop selling or supporting. How can you purchase them? Are you Illegal?
An example of that is that Autodesk stopped selling AutoCAD 2002 and before, what do I do when I need one of these? Am I illegal? Some things that AutoCAD 2000 did can't be found at newer versions, or your clients give you old formats, etc. There are many reasons to buy an old package. What can you do?