Comment by embedding-shape

Some classes of software, as the author rightly points out, yeah.

But there is much out there that still run the exact same software that they wrote 20, 30 or even longer time ago. Personally, it's most noticable with musical instruments I use, where most of the synthesizers are still running the exact same software as they launched with, +- some recreational hacks sometimes.

Once you control both the hardware and software, things become a lot easier (yet not problem-free). I'm sure there is more stuff out there than synthesizers that is similar, from signage to 3D printing firmware. I still come across random (important) devices running Windows XP out there in the wild.