RedHat does. In my dealings with their sales reps, it is a "no-go" to keep using RHEL after your subscription runs out.
Almost every argument I hear against the RHEL products is "well, I used to get this without having to pay". That is part of the problem. It is hard
I'd say that it's the fact that there's a certain degree of inflexibility coming from them. People know that it's been a long, free lunch with Red Hat Linux for years. What they're doing now is 100% right (with the switch) - but *.edu and small businesses are taking it up the rear. My school can't afford the educational pricing - well - we could if it wasn't a yearly subscription.
So now, the company that I feel DESERVES whatever money we can give to them will get *none* as we switch to Fedora and Solaris x86.
e.
-- e r i k w i l l i a m s o n erik@xxxxxxxxxxxxxxxx system admin . department of computer science . university of calgary