Can a game created on Unity be made available for payment and are any fees charged for this?

If my company sell build of game other company, does this company must pay license fee for selling or gain money from this build?

For example, I sell build of game for windows and earn 1 MLN.
Than company that buy the build will earn 20 MLN for distributing the game. Does it mean both companies must buy Unity License?

The problem is : Does both: producer and game studios must pay fee or only game studios? This is quite common problem I think due to separation of Creating Games and Marketing and Selling - many times these are separate companies.