You don't need a pause button on all the videos. You just need a single button that pauses all the videos. I would be delighted if the escape key on my laptop

You don't need a pause button on all the videos. You just need a single button that pauses all the videos. I would be delighted if the escape key on my laptop served this purpose. Of course, now you have no UI no restart a particular video. But the advertisers would figure this out about 30s after a global pause feature was introduced.