> CDMA networks are by far and away the most universal and ubiquitous mode of wireless communication.
Uh... What are you taking about? There's nothing remotely universal about Verizon and Sprint. AT&T and T-Mobile are at best just as big, if not larger. Not to mention the fact that GSM is compatible with the entire rest of the world.
Also, Verizon is (finally) shutting their network down at the end of 2019. Global standards are more important than coverage out in the middle of nowhere, USA.