Even though they own a "large portion" Doug, that doesn't necessarily mean they own a "Majority" of the stock.  
It would be interesting to know exactly how much (what %) Yammie really owns though.  Whatever amount it is apparently it doesn't impose restrictions or hinderances in innovation and marketing competition between them.  In another words, I don't think their in cahoots with each other.  Although I could be wrong about that.  
  Just give me my PA1-X the way I want it with all my wish list features included Korg or that new Monster board with the same from you Yammie and I'll be a happy camper.  

Best regards,
Mike