This is going to be interesting to see how it plays out. How long before someone drops the price again? Eventually someone will probably do it and will all the others respond?
Also roaming could be affected. Right now companies roam across eachothers networks and trade minutes. If there is no limit on the number of minutes, it could start causing problems if lets say all the ATT customers were roaming in US Cellular's area or T Mobile's area and not enough of the others were roaming in ATT to balance it out and ATT started to have to pay (and not collect from the customer). They might just change the roaming not to roam into the other networks.
This will be interesting to watch.
Also roaming could be affected. Right now companies roam across eachothers networks and trade minutes. If there is no limit on the number of minutes, it could start causing problems if lets say all the ATT customers were roaming in US Cellular's area or T Mobile's area and not enough of the others were roaming in ATT to balance it out and ATT started to have to pay (and not collect from the customer). They might just change the roaming not to roam into the other networks.
This will be interesting to watch.