First optical disk drive firmwares do have DRM[1], this is probably not due
to the laptop itself.
They for instance implement zone restrictions[2].
Then the I/O error can mean many things:
(1) The media is damaged or the drive has a hard time reading it.
(2) The disk has "damaged" zones on purpose, to prevent copying it.
(3) The firmware refuses to copy it somehow (DRM?).
The most common issue is (1), and various tools in GNU/Linux exist for
dealing with it.
I had the most success with GNU ddrescue.
[1]http://scanlime.org/2016/08/scanlime002-coastermelt-part-2/
[2]https://en.wikipedia.org/wiki/DVD_zone
PS: If you want to get help to resolve technical issue, the best is to try to
give relevant information and ask "if it is DRM" instead of deciding that it
is, without any proof of it.
That said, DRM is evil and should not exist.
Denis.
