[iSloth]

Being pragmatic you’re not going to convince every Mobile network vendor to implement a new protocol, and then have every mobile operator invest in replacing their cores to support it, all in the name of a better solution.

[tamimio]

You don’t convince, you avoid that risk completely by not using GSM as the medium of identity verification, just regulate an identity verification mechanism for banks and such, and don’t mandate it for the users so they are free to choose or opt-out.