Between those two, both are a big deal. If the person(s) sell 9 million and change a culture but in a negativity way, that's a questionable proposition. Sometimes, changing a culture isn't always a good thing, nor needs to be. I doubt I'd do either, but I'd like to righteously change a culture if need be. I don't think I'm the type of person for it though. It's something about making music, that I almost can't explain it at this point.
50 Cent's millions sold effect seems to have been only for the moment to put money in his pocket. 50 isn't even running things right now. It's the "Dirty Souf" right now.