Unlike something like an 8-track tape player, just because a consumer decides to continue using an analog phone, if the analog network is no longer there, the consumer is out of luck. (And I say this as someone who is using a 5+ year old cell phone)

I can't see any financial incentive for any carriers to continue providing analog service. The network equipment is old and is an additional cost to support and maintain, and the subscriber base is relatively small since mostly only widely spread out rural folks may totally depend on analog-only service. In contrast, the financial gain from dumping their analog networks, forcing analog customers to buy new phones, freeing up bandwidth for more lucrative services or to sell off, etc. is a no-brainer for the carriers.

Besides, has any carrier implemented a cost-effective analog solution to meet E911 requirements? I'm not aware of any. Yet another reason that analog networks will get dropped ASAP.