It's simple: There's more views than ads.
Ads are purchased.
It's simple: There's more views than ads.
Ads are purchased. Unless there's more ad placements purchased than total views, not all views will be monetized.
there's also adblock to consider.
now the question is:
why the total number of impressions is less than the total number of views.
I honestly feel like you're trying to make this far more complicated than it actually is...
.
I already told you; there are less impressions than views because there are not enough ad slots purchased through AdSense to make every view a monetized view. If you wanna go purchase several billion ads for YT to display, perhaps you'll even it out for a little while.
.
It's simple supply and demand.
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When you go into a shop, why don't you buy all of their stock?