Well, maybe a subscription for every site is not the right business model, we could imagine a lot of different ones. For example, automatic tipping when you spend more than x minutes on a website (something similar to what brave is trying to do), or pay by article (a few cents) on news sites.

Eventually people won't be able to subscribe to every site they want content from obviously. Look at netflix / hulu / amazon videos / youtube red ... It adds up very quickly.

I wouldn't really like to manage multiple subscriptions, but what I would be willing to do is pay for membership to a service which offers me access to a wide variety of ad-free websites. Kind of like how a cable subscription gets me access to a large number of channels (but without the commercials).

I don't know

But I know I will keep blocking ads because they slow down the website and consume a lot of bandwidth

The most useful ones are already free. So, probably none that I don't already. Development resources (free, hosted by companies with incentive to spread the info). Wikipedia. Rarely I still manage to stumble on some non-monetized hobbyist sites, despite their being hard to find under current search algos (infrequent updates, no attention to SEO, no padding things to look like "more unique content per page" to Google), and that's nice.

The rest I already pay for (Netflix, which just barely skates by being so cheap), are essentially utility things (bank sites, government), or are so low-value I'd probably be better off not using them, frankly. Or are simply piracy sites (library genesis / scihub), for that matter.

Any topic I scratch the surface of in online research I end up at excellent, totally free (not ad supported) resources or finding that I need to track down some books, or some combination of the two.

I look at it this way: some sites might be worth paying for, none are worth being tracked for or being eye-raped by ads. I don't know why anyone would think it is a good idea to try and make money on something no one is willing to pay for.

About the adnauseam topic: while paywalled sites makes it clear that you need to pay for their content or services, the one with ads don't. You are candidly browsing the web and suddenly they just shove tons of trackers and ads down your browser, no question asked.

This is read by some people as an act of war, who are then motivated to retaliate using weapons like adnauseam. Of course they should just ignore or block the whole websites in questions, but no one can pretend they drew first blood.

The ones I would actually use.

Most of them. And the ones I wouldn't pay for I wouldn't miss.

None