i was unaware that every computer had the same file system, of C:\Program Files\
It doesn't.
Not all computers use C:\ as root drive, and some use multiple and have the default on a diffirent path.
And the default folder for programs depends on 64-bit and operating system language.
For example, on 64-bit, 32x programs usually install in "Program Files (x86)".
And in Danish installations, the folder is named "Programmer", or in German installations, "Programme". Just examples.