That last one is already happening, and has been for 5-10 years, albeit not dynamically. Reruns of old shows sometimes have the advertisements switched out or e

That last one is already happening, and has been for 5-10 years, albeit not dynamically. Reruns of old shows sometimes have the advertisements switched out or even inserted. Here's an article describing this phenomenon in 2011: http://www.ew.com/article/2011/07/07/how-i-met-your-mother-reruns-bad-teacher-zookeeper/ http://www.ew.com/article/2011/07/07/how-i-met-your-mother-r...