'Scuse me, but how in the hull do *you* know what Comcast, TW, Charter, etc are going to do in the coming years? Some doubt they know they-own-selves.
Several years ago I could get premium (HBO, etc) channels on my NTSC tuners. Not no' mo': gotta have a (Charter) Digital-Garbage Box (and pay rent on it).
Last I looked, there were incentives for cable vendors to further convert to "digital". Not directly connected to the 2009 ATSC changeover.
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Puddin'
"Mit der Dummheit kaempfen Goetter selbst vergebens!" -Friedrich Schiller