My provider used to remove 3G this summer. Now I have some struggle watching Youtube inside of forest (in winters 4g is great), but 2G still does the thing for me. Probably nobody wants to support semi-obsoleted infrastructure on the both ends - feeders on the base stations and chip space on the client side. Apple seems to have balls for removing some hardware standards.

BTW, 4g is really ubiquitos, it is very hard to find a place where 2G works and 4G is not. The real advantage of 3G was battery consumption for client device. I believe 2G will live forever because of energy counters and bank terminals, but 3G has no that important clients who can not migrate.

PS. Good-bye old Symbian devices, having internets on my laptop via 3G + BT was very enegry-efficient way to have internets while backpacking.