But you’re not pitching this to YouTube.
I pay for YouTube premium because i spend more time on there in a year than i do outdoors. Random website on the internet? If your website tells me “Hi this 20 minute video you clicked on this site you’ve never been to is going to serve you 3 ads, but you can pay 5.99 and skip all the ads!”… I’ve already left the website to find somewhere that’ll give me the same info or content without the annoyance.
If you can actually successfully sell it to YouTube, or Vimeo, or some other major, “People will stay on this site regardless of ads” level site, the option of paying for ads holds value. If it’s Joe Shmoe’s Website Of The Day and i’ve never been there? Bye.