Different things can be said about
Kaj Arno's , Refining MySQL Community Server but given the fact that the source will continue to be freely available from Bitkeeper I see no issues apart from a possible growth in real community MySQL with real contributions.
In Mike Kruckenberg's article on the topic someone comments and asks how this is different from the RedHat model, I only see one difference, today we don't have a CentOS yet for MySQL .. I`m sure it's just a matter of time and someone will start building RPM/Debian packages from the source repository. (If it's not already happening today)
As long as MySQL keeps all their source code free ..
