"...lately more businesses are adopting their Linux
code-base and offering support for it.
"Why would anyone want to do this? After all, Red Hat support
doesn't costs you an arm and a leg. The first developers who used
Red Hat Linux as the foundation for their own
distributions--CentOS, StartCom, and White Box Enterprise
Linux--ended up creating distributions for people who were richer
in Linux expertise than they were in money. Thus, historically,
RHEL clone users tend to be old Linux pros who didn't need much in
the way of Red Hat hand-holding.
"According to a report by Sean Michael Kerner, Red Hat isn't
worried about these users. Kerner quotes Red Hat's Marco
Bill-Peter, VP of Global Support Services as saying, "We are not
actively chasing users of CentOS, but rather find that enterprises
are naturally turning to Red Hat for the value of the Red Hat
subscription model and support.""