When IPTV is mentioned, often what is meant is TV over IP. These are different things (or at least different approaches), Om Malik explains.
"Now compare this with Television over IP, or broadband video. Television over IP, on the other hand is the high quality streaming video, that is made available over the fast pipes, without a set-top box. This is a (comparatively) fairly low cost, and perhaps a simpler model. This simplicity is one of the reasons, it might actually gain traction in the market."