https://www.techdirt.com/articles/20180213/13581339227/verizon-begins-locking-down-phones-again-purportedly-to-stop-theft.shtml

If you've been around a while, you probably know that Verizon has an adversarial relationship with openness and competition. The company's history is rife with attempts to stifle competing emerging technologies that challenged Verizon's own business interests, from its early attempts to block GPS and tethering apps so users would have to subscribe to inferior and expensive Verizon services, to its attempts to block competing mobile payment services to force users (again) onto Verizon's own, inferior products. And that's before you get to Verizon's attempts to kill net neutrality and keep the broadband industry uncompetitive.

In the earlier years, Verizon had a horrible tendency to lock down its devices to a crippling and comical degree. But with the rise of net neutrality, competition from carriers like T-Mobile, and open access conditions affixed to certain spectrum purchased by Verizon, the company slowly-but-surely loosened its iron grip on mobile devices. But let's be clear: the company had to be dragged, kicking and screaming, into the new, more open future we all currently enjoy, where (by and large) you can install whatever apps you like on your device, and attach most mainstream devices (with some caveats) to Verizon's network.