T-Mobile should make a few loud examples out of those proven to be doing this. Deterrent is the best medicine. Of course they don't want this kind of attention so they'll do as little as possible.
If your phone number being stolen causes your savings to get drained for long enough that you run into problems making important payments like rent, taxes, car payments; That can pretty quickly spiral into even worse situations. In a world/country where many people have too few savings to go even a month without being paid, losing even that can get extremely dangerous. Not to mention the stress of such a situation alone will probably take quite a bit of your life expectancy off.
While I absolutely understand the point you're making....
At least in the United States, we also live in a society where the financial ramifications of getting shot could lead to equally bad financial outcomes (whether directly or indirectly).
