My question is "why does it matter whether Berd or Dimi go on to other brands?" Do those players players influence you to buy their products or pay their salaries? Personally, it doesn't matter to me. When Andre moved on to adidas, I thought, good for him. The dude is still getting paid after all these years.
"The time when there is no one there to feel sorry for you or to cheer for you is when a player is made".- Tim Duncan