If T-Mobile is successful, this will have far-reaching effects on the industry. Given the choice between a $20 price drop and a new phone, how many people will

If T-Mobile is successful, this will have far-reaching effects on the industry. Given the choice between a $20 price drop and a new phone, how many people will insist on that new phone? Given a $40 gap between T-Mobile and ($20 price differential + $20 subsidy differential), what will happen to T-Mobile's churn rates vis-a-vis the subsidized-plan carriers? If they can force the other carriers to respond, then this will have benefits for everyone in the US who has a cellphone.