IDEA: customised TV advertising for me between programs

Hi,
  I don't like TV advertising for most parts. Usually because I am not average (actually, nobody is really average ). However, I do accept it as necessary evil as it comes part and parcel of capitalism in its various guises. It would be a lot more bearable  if advertising actually consist of any items I am interested in.

  What is required is simply to use a STB (set top box) with storage, such as the various plus boxes from Sky and Virgin to fill in the advertising slot primarily with items that I am interested in by downloading the clips in advance and inserting them as required by the broadcaster.  A signal in the program could indicate the start of an advertising clip and control the replay of the locally stored clips instead. If no preferences are set or insufficient matches are available for the time slot,  the box will only play the provided clips from the feed.

  The box could also play all of the advertising I am interested in on demand. For example should I look for a car insurance I could view all the recent advertisements for car insurance over and over again. Maybe the advertiser could also augment the advert with additional details to make it a longer, purpose build advert for me.

  This should be a very simple amendment as movies can already be stored and downloaded on demand. Why not advertising programs ?