The price of the ads could be going up at a quicker rate, especially as more and more viewers from previous ad spending channels (such as TV channels) move to online options (such as Youtube).

Also, the number of people using ad blockers must be extremely low. Even crazier, most people who I talk to about content blockers on iOS zone out of the conversation before I can even get to how easy it is. They do not even care that much about the ads or notice how annoying they are.

Then again, many or most people still watch live sports and old school TV channels, which are chock full of ads. I cannot even stand too obvious product placement, much less ad breaks. So while I will go out of my way to remove ads from my life, there are probably 9 others who will not spend a single second thinking about it.