Sometimes it arises from the nature of the enterprise--you wouldn't want to have to have dozens of different telephone lines in your house just so you could connect with all the different phone companies your friends might select.
Compatibility across services is essential to keeping customers happy.
mnli hypothesis: Compatibility across services is essential to keeping customers happy. premise: Sometimes it arises from the nature of the enterprise--you wouldn't want to have to have dozens of different telephone lines in your house just so you could connect with all the different phone companies your friends might select.