of course tv ads become more profitable with more of the proactive, thinking populace moving to more modern ways to consume like Netflix or Amazon. What's left is more and more the passive people that are more easily influenced by suggestions coming from ads.
This however is not a long term growth strategy. It's more like the last bump up before everything falls down. If I had a way to bet 6-7 digit amounts of money against tv I would do so right now.