Maybe the real question is, "why do they sell DVD-R media?" (At the same time, they want to kill -R format ). It seems that the DVD marketing world is now so complicated; I doubt if anyone really knows what gives the best long term profit for the company.
There were times we thought Pioneer would never support +R. Now they support autobitsetting for +R DL media. Philips selling MCC code media isn't anything weird compared to all such things.