Back in the 1960's the Ma Bell telephone companies did not allow you to use your own telephone but made you rent one of theirs'. This was referred to as CPE (customer premise equipment) and you had to use their service with their CPE. That sounds pretty harsh but we are re-living the past with current wireless carriers.
Anyone with an iPhone has heard the term of "unlocked phone". This refers to a phone can be unlocked to run on carriers other than the one who sold us the phone. This practice is found in the old world of telecom, but how do we stop it today?
Wireless carriers need to figure out how to sell us one wireless plan and let devices share that one plan be it CDMA/3G/HSDPA just like we do on our home WiFi networks. We have one router and multiple "unlocked" devices can access it and share the bandwidth.
The carriers are just dump pipes, plumbing if you will. I personally do not find any value-add in ringtones and hosted picture albums. Just give me unlimited data without caps at a decent price that can be shared.