But, sometimes the people that use CentOS get hired by Mega-Corp and when their CTO requires a support contract with contracted SLA's, they choose RHEL instead

But, sometimes the people that use CentOS get hired by Mega-Corp and when their CTO requires a support contract with contracted SLA's, they choose RHEL instead of Ubuntu One, because they're way more familiar with RHEL'like systems instead of Debian systems. Yes, cheap/free people will be cheap/free, but sometimes they're not the decider.