> When a CD was inserted, it checked for a watermark and if there, returned pseudo random sectors of data.
So, if the driver was not running in the machine, the disc would be a standard Data+AudioCD? Nothing else to stop reading it as a generic music disc?
Basically, if you inserted the disc, Windows would see the data partition, and "helpfully" run the installer for you. Then you'd have the driver installed, and it would block access to read the disc as a generic music disc.
In 1995 the idea of commercial products being adversarial is low. For the very few cases of the driver they install being unwanted, there's countlessly more cases of it being wanted.
This wasn't "secure by design," it was "usable by design." And for 99.9% of the people, it was likely both.