Maybe is in the metadata as someone pointed out earlier, or it could be an otherwise unused ASCII char that looks different for each user who licensed it when printed out, sort of like a qr code as a single ASCII char.

Or it could be that they simply just check filename, file size and/or md5, all of which can be easily changed.

Nope, you need more than 1 subscription, because quite often services only offer a few of the seasons of your favorite show, while the others are on different services.

Example: https://www.pokemon.com/us/animation/where-to-watch-pokemon-episodes-movies

In the 90s there where a lot more OS available to compete agains windows, who already had existing software (sometimes better and more capable) to compete with windows: MacOS (Popular in print, layout), BeOS, OS2/warp (tried to replace windows), Amiga OS (best for video editing work at the time), Atari, Novell Netware.

It’s not exactly like people where desperate for another OS at this point in the late 90s/early 2000s.

Windows as a software package would have never been affordable to individuals or local-level orgs in countries like India and Bangladesh (especially in the 2000’s) that are now powerhouses of IT. … Had the OS been too difficult to pirate, educators and local institutions in these countries would have certainly shifted to Linux and the like.

While i somewhat agree with your overall statement, this part is just wrong. Linux in the late 1990s and 2000s was very different from today, where you just plug in a CD/USB and select your region. Linux back then was very nerdy, you had to choose your hardware first to make sure there was a linux driver and the installation process was very difficult, especially before plug&play where you had to know which IRQs and slots you had to use for network, sound and videocard to avoid conflicts. I remember trying to install Linux from a CD, only to work my war from one error message to the next because it did not like my videocard, soundcard or both.

Also, what would you do with a linux pc at home or at work if it could not run word, excel, duke nukem 3D, TTD, programs you knew from work/school or software you could pirate from your friends?