So, it seems that the need/desire for some cable companies to implement SDV is a result of several possible market/regulatory failures: 0. With some/many cable companies elimenating analog altogether, is there really a need for SDV???? 1. Bundling of channels into packages. Most consumers only watch a small subset of the channels they pay for, and therefore subsidize the small minority of viewers watching the "others". Ala Carte would kill off quickly those "other" channels or the folks which actually watch them would have to fund the development of them. OTOH the programmers would have to survive on the income from the subset of the market which opts to actually pay for their content. If there are that few people actually watching the channels on SDV, then those channels would likely not be financially viable if left to fend for themselves? Maybe the FCC should let a free market determine which channels survive or not & ban SDV altogether? 2. Deterrent by the cable companies for consumers to use their own hardware and not lease cable company provided devices. In other words, make it as painfull as possible to discourage consumers from owning their own hardware. You know-send out scarry misleading letters to consumers that they will lose service if they dont lease cable company provided STB's/DVR's. 3. Unwillingness of cable operators to invest in and maintain their networks. Lack of any real competition in most locales allows the cable companies to sit back, constantly raise prices, and treat subscribers with contempt all the while taking forever to enhance their networks. The use of SDV is a symptom of the cheap way out of this situation. Any others I missed? Alternatively, is SDV the savings grace for the cable companies that will provided an almost unlimited selection of channels? Isnt SDV basically identical to services like netflix/amazon except it is served over a network only accessible to the cable companies? What happens to a channel which becomes too popular on SDV and starts using too much bandwidth? Does this channel then get moved to a regular linear always on channel? For example, if there are 500,000 subscribers watching a SDV channel at the same time, would it not be more efficient to move the transport stream to non-SDV? I mean 500,000 x 12 mbps bandwidth versus 12 mbps to everyone in the regular mux? Maybe I misunderstand SDV?