Very interesting! Tangentially I've worked a lot with video streaming, and one technology that there was a lot of buzz around was to splice personalized ads int

Very interesting! Tangentially I've worked a lot with video streaming, and one technology that there was a lot of buzz around was to splice personalized ads into regular linear TV broadcasts. Basically it replaced the original broadcast ads with personalized ones, completely seamless and unnoticeable. I don't know if it was ever implemented, but it sounds like it would tap into the same mechanism that you propose.