for YouTube the advertisers don’t pay as their adverts are never compiled into the magazine
This is true. It does still line up with the freedom of consuming content the way you want on your personal browser, however.
Imagine playing a browser yourself. You use telnet to download the HTML for a video. You inspect it, and find that there is a JavaScript asset in the HTML. You make a GET request to fetch it. A dozen requests later, there is a link to an ad.
What do you do now? Are you obligated to submit a GET request to it? Do you not have a right to choose to skip it? Earlier, in telnet, you skipped downloading thumbnails that you didn’t care about, so how is this any different? Shouldn’t you be able to choose this? Say you didn’t have freedom, and you actually were obligated to type out a GET request to fetch the ad. After the ad has been downloaded, you are technically consuming the content offline in a cache. Now what?
Are you obligated to view it? It’s a stream of data. You could inspect the content in a hex editor as a way of viewing it, but it’s that enough? Did you actually consume it? Are you forced to use a functional media player on your personal device to play the ad? How much of the ad are you forced to watch? What difference does it make at this point, since you’ve obtained the data, and you’re left to your own devices? Shouldn’t you have the freedom to do what you want?
If YouTube does some ad payout stuff behind the scenes, server-side, then that’s server-side, and it isn’t any of your business. It’s the same as their data collection, sharing with third parties, building a profile on you, tracking hit counters, etc. In fact, they spend a lot of effort ensuring that it doesn’t become anyone’s business but their own. Just because the asset is an ad versus a JavaScript asset you also didn’t care about doesn’t matter. You have the freedom to consume the content that’s given to you in the privacy of your own home.
You could liken ads to free physical mailing list forms in the free magazine. Just because you obtained the magazine and the publisher makes money off you signing up for junk mail doesn’t mean you’re obligated to do it. You are given the option to request more media, and you are not forced to make any effort to cut it out of the magazine, fill it out, and mail it in. You’re also not obligated to read any amount of the junk mail that you receive as a result of the form. This is your choice, and you should be able to flip to the next page instead, which is equal to not being obligated to type GET requests by hand in a telnet console, which is equal to choosing not to make the requests in your browser.