This meme doesn't just apply to TV Networks nowadays though, it also implies to many youtube-channels I have followed throughout the years and supported them by not having adblock on. Lately they have been placing ads within their 10-20 minute videos, 2-3 ads at a time.
Its either 1 unskippable ad or one that you can skip after 5 seconds at the start, then there are ads within the video as well and even at the end!
example:
also how ridiculous is it that Onecoin is trying to make a couple dollars off youtube ads as well... oh well #timewilltell
but back to my main point, adblock is getting more and more popular, thus decreasing the amount of ad revenue the creators get so they have to add more of them.
I'm really not sure how the ads will further evolve in the future, but just increasing quantity to have users get spammed by them is not the way to go and I can see myself using adblock if this keeps going like this.