The fact that you have to wait till the carrier 'offers it' to you shows just how backwards the United States phone and mobile service is -
If you meant having to wait for a carrier to offer each phone, then I'm all for your rant! One cause is exclusivity, of course. For example, Sprint often pays to get phones six months ahead of others.
But you haven't answered my original question of Verizon sticking with CDMA when all carriers have moved onto W-CDMA (which is basically GSM)
Not sure I understand your question.
Verizon and Sprint didn't have to move to WCDMA. They started with CDMA and upgraded it to EVDO.
Now they're adding an LTE overlay. They intend to keep CDMA for voice until 2020 or longer, while replacing EVDO with LTE.
Thus they can still have inexpensive voice-only phones, with 4G being available for smartphones and such.
It's expected that GSM carriers will do something very similar.