If you have the option, take it. The company has broken promises and will do it again. If you don't have an option, wait a while and look around. All the scenarios that are depicted in this editorial show clearly that the author of the editorial doesn't understand Open Source. Open Source is not about being magnanimous, egalitarian or altruistic.
Free software is about better software.
Their product will have greater mindshare that is cheaper to get and they will obtain contributions from their users that they wouldn't have gotten otherwise. They make money by selling commercial versions of the same software with commercial support. Apple looks like it might be playing this game with OS X. Woe to them if they are. That seems a bit extreme. I am not anti-Open Source.