Really?

Back in 1996, with Director 5, we had to use a resource editor to change the executable icon. It was very difficult. I've seen many CD-ROM's made with Director where they didn't know how to do this.

And with Delphi it was easier, but it was unmistakable to recognize the delphi default application icon. Maybe that's all I am thinking of, that it's simply easy to recognize a delphi app if the programmer is too lazy to create a custom icon.