Love DirecTV on Demand? ISPs don't.
As you read posts claiming that OTA/ATSC is not important, remember that you are at the mercy of the individual stations and their negotiation status with DirecTV (not to mention missing out on subchannels). And these negotiations are not "one and done" but will come up every once in a while--and at that point you can lose your stations completely if there is an impasse.