Adverts in a video are for the non savvy, who are much more likely to click on the ad, and actually buy the product being advertised, than those who are able to use the ad blocker. If you are blocking the ads then the chances of you buying anything from an ad is so much lower than if you did not, so rather go after the low hanging fruit. As a plus most advertising is wrong, the art is in getting the amount that is wrong down low enough that you make a profit.
the Audible ad is likely a placeholder ad, low price to the provider, and played whenever there is not enough info available in the algorithm to decide on a better targeted ad, so roll through the low cost ads in the hope to get more analytical data.
At work not my computer, and I do enough random searches to confuse the ad algorithm anyway, plus never actually signed into my own account there ever, so the ads I get are random, or related to older searches. Did install adblock there for Chrome, more to stop annoying audio and video ads, than anything else. If I want personal email I use my phone, and the DuckDuckGo browser addon, which, while it does sweet FA about Google tracking links from Gmail ( go figure, if the mobile Gmail mail client cannot do a ping, then it simply does a redirect through google to get the data) or the other trackers, at least i do not waste the data I pay for on annoying underlay ads, instead getting just a black screen in place of them, plus almost no ads or trackers otherwise on pages.
Only a couple of publishers who went online from print have the ability to serve all the ads they want to irrespective of adblocking and blacklists, because they did their homework, and host the ads themselves, and do all the analytics in house as well, so blocking the ads almost invariably ( unless you get very granular in the blacklist to block specific parts of sites) results in no content at all being delivered. However having the ad served from your own server means you control the type of ad served, and how much it can do as well. Much less chance of malware then, though it does mean you will have a proper web developer team, and vet every incoming advert as well.