An example from another MVNO-- FreeUP limits free accounts to one line per discreet user, but leaves it up to the customers (up to now) to be self-policing about this policy.
FreeUP doesn't give any free data because they knew it would be abused with multiple free accounts
I agree-- and would add that it encourages an upgrade to a still reasonably priced paid plan. FreeUP has been more attentive to the inherent risk to their bottom line, and has apparently decided to value slower, steady, and real, customer base growth over increasing account numbers at unsustainable cost. I hope it works for them.