They are the flagship of their city, their region or even their country. Hence, they become very attractive for brands to associate their name to them and therefore increase awareness and sympathy towards their brand in a very short period of time.
Thus, the naming strategy is part of a virtuous circle that lightens the financial contribution of local authorities for big infrastructures. Knowing the exact value of a naming contract and being able to offer a package including all the advertiser's needs are necessary.