businesses. Businesses care more about those things than they do about the minor differences between distributions.
And companies like to have a good company to support the OS which gives them someone to sue if things go bad.
Just out of curiosity, have you tried Canonical's support? I'll not argue about the certifications (personally, I rather loathe the concept, but I'll grant that Canonical's can't be as widespread or mature), but I haven't seen enough either way to say that Canonical's paid support is any better or worse than Red Hat's. Have you?
Not an attack/really asking - It'd be good to hear what people have to say about them.
Sean Crago Kathmandu