I always wondered why MS, which benefited from a similar modus operandi, abandoned it so drastically. When the internet got good enough that sharing software became feasible, they introduced online activation, basically pushing people towards alternatives.
They still push Microsoft products pretty heavily in universities. I was very happy when I went off to university to be able to easily get keys for products like Windows, Office and Visual Studio. Our CS department had something set up and the impression I got was that Microsoft was footing a good bit of the bill to make sure that they were the easiest choice for most students to get professional software.