"If your processor model (listed in /proc/cpuinfo) is 78 or 94, and the stepping is 3, install the non-free "intel-microcode" package" Why in the world isnt

"If your processor model (listed in /proc/cpuinfo) is 78 or 94, and the stepping is 3, install the non-free "intel-microcode" package" Why in the world isnt this free?