T-Mobile offers business clients discounts and group discounts (Dutch) when they develop a long term relationship: the longer you're a client, the higher your discount. This loyalty discount can go up to 6%Future Vision by Erwin Van Lun on this article
It’ll be increasingly more difficult to get new customers in the medialandscape that’s developing. When it used to be the rule that it’s five times as difficult to get a new customer than it is to keep an existing one, this ratio is only going to get worse. Finding new customers is going to get increasingly more difficult. Because of this brands are forced to do their utmost to keep existing customers. With service, but also with price. This is a nice example.