I doubt that this will hurt Dell with serious business customers. Dell is offering the option to have machines loaded with Red Hat, Suse, and now Ubuntu - a good range of popular Linux releases.
This makes good business sense, and too bad if a few tin-foil hats are offended. You can make philosophical arguments, but Suse certainly is popular, and from my own experience there's a lot to like about Suse. (I worked on a project where the customer dictated Suse. I grumbled at first, but found it quite likable.)
It would be a disservice to their customers NOT to offer Suse. Those who are opposed on moral grounds can choose one of the other available OSs.