Owns is indeed a verb, just like has is a verb.
It is pretty clear that Murdock has far more than enough. He can buy anything imaginable that is for sale to enhance his life and have billions left over.
If you want to build a media network, how much would you need?
If you wanted to build spaceships how much would you need?
If you wanted to build an hospital in a third world backwater how much would you need?
If you wanted to sign ten thousand paychecks , how much would you need?
I think Need is a verb , but is it decribing a decision?