Since they already own MV Augusta, perhaps they decided Ducati would have been redundant, especially for what is likely limited capital to split between MotoGP efforts, MV Augusta development, and a Ducati purchase and further development.
They may compete with Ducati some day, but without further success on the MotoGP circuit to increase they're name recognition, they'll have to do it with MV, which does have a large (relatively speaking) following.
I was wondering since they bought controlling intrest in MV Agusta, if team Proton/KR would re-badge themselve as MV Augusta/KR. It seems like a no-brainer with the history of MV Agusta in Grand Prix racing and the stature of KR, it would be a marketing hits for them, and put a slightly more recognised name out there.
Look I only discovered it few weeks ago, so pardon my ignorance. His layout is great, it is now one of favorite sites to hit. So far his update rate has been great and the stories diverse unlike when Sean leaves longride home alone at MO..... If this guy can do this well as a hobby? just think he could do full-time. I applaud his passion for it...