You are confusing remote wipe with deactivating a phone.
Remote Wipe (if successful) means that a lost or stolen phone if successful you can be as close to sure that no data on the device is still there. The thief is welcome to to the phone.
Deactivating the phone means that the smartphone cannot be used again. Apple have something close to this now with find my iPhone. A wiped iPhone cannot be reactivated without the original username and password, if it is still linked to your iCloud account. It is questionable as to whether this can be easily defeated. There are very few opportunities to jailbreak a device that is pending activation.