Its not that they cannot do it, it will just backfire on them bad.
All these people on contract will be able to go free wherever they want and those not on contract mostly will leave AT&T.
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Of Course I know they don't give it out free phones or financing.
But my current plan with full subsidies and 29% off due to employers discount works out great and cheaper than those mobile share plans and with unlimited data on 3 lines out of 4.
So mobile share or prepaid is not always cheaper or better that's all

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I wont go into much political talk and I'm also not a fan of Obama but I did end up voting for him the 1st time.
Didn't make the same mistake twice

I just hope we see some healthy competition between carriers and better prices, consumer treatment, more choices and device unlock freedom from all carrier.