I remember that in 1994-1995 Linux was a shock: you were able to run for free in your personal computer a system that did similar things to SCO Unix or Coherent (Unix clone) without the need of pirating it (students were used to pirate SCO Unix 20 1.44MB floppies using a special DOS copy program called "PC Trace" in order to copy non-DOS formatted disks, that "tradition" was lost because Linux was able to run using less space, and usually performing quite well on cheap hardware)