"Five years ago, Red Hat sent a shock wave through the Linux
community when it announced a new bleeding-edge development pace
for its flagship distribution, Red Hat Linux.
"Starting with Red Hat Linux 9, which was soon rebranded as
Fedora Core, Red Hat forced its users to choose between the stable,
supported and per-system fee-toting Red Hat Enterprise Linux and a
fast-moving, community-supported and fee-free distribution..."