Why Doesn’t YAMAHA make DVD Burners anymore?

Yamaha is one of my Favorite companies, and I build PCs and I am getting ready to put together my next “Super Computer” “Dream machine” and I am looking around for a Yamaha Blu-ray DVD burner and I can’t find one. Seems like Yamaha would be raking it in if they got more involved in the Computer Industry. I don’t get it, they could be making Sound cards for Studio recording, that would put the XFI cards to shame! And they could be getting into all the VST side of the Sound Card stuff, Multi-Inputs and they would have the ability to go to the Extreme in Audio Amplification for Computer High Fidelity. So what’s up? Does anyone know what Yamaha’s Deal is?