You could be right, but I wouldn't think they would put them all up there, unless they are forced to. Here in our viewing area I get around 30 OTA HD & Digital channels, including the subchannels. Many of them are digital but not HD. Some play infomercials over and over, all day long.
I see they only put up the big 4 networks, in Detroit.
This is from their original press release, "Initially DIRECTV will carry each of the primary broadcast networks that offer an HD feed in the market and customers who subscribe to a local channel package will receive both the standard and HD signal. HD local programming will be received via a single dish -- slightly larger than the current standard dish -- and customers will require new HD set top boxes due to new compression technology".
I thought they were referring to the big 4 Networks, like they have in their east & west coast HD channels now.