Google has offered an explanation for why these ads are happening and what users can do about it. Whether the explanation is satisfying?

Personalised ads and content, ad and content measurement, audience insights and product development. List of Partners (vendors) Microsoft and our third-party vendors use cookies to store and access information such as unique IDs to deliver,

Google denies serving extended unskippable ads on YouTube despite survey showing 31% of users encounter ads longer than two minutes.

YouTube ads are now unskippable and can last for several hours, jsut to deter users with adblockers. Google is cracking down on freeloaders by showing excessively long ads to promote premium subscriptions.