Extensions are very much not single-click:

1. Locate and open Addons screen (~2-3 clicks in the browser menu).

2. Locate and click "Get more addons" (1 click).

3. Wait for store page to open, search for desired extension. (Around a dozen keypresses for average-length extension name.)

4. Locate and click "Install" (1 click).

5. Confirm modal dialogs for installation and permissions (1-2 clicks).

That's nowhere near one-click and even if it were a one-click operation, 90% of users don't even know they would want to do that click.

People weren't searching for this (why would they?). They were linked directly to the extension on participating sites, which does install in 1 click. https://developer.chrome.com/webstore/inline_installation

We also did plenty of other marketing and onboarding to get users interested, it wasn't just slapping together an extension and calling it done. 99% of the friction came from people not wanting to pay for content, not the technical workings.

Doesn't matter. It needs to be an integral part of the browser.

Ok, do you have an argument on why you think it doesn't matter? We actually did the work and these are the results.

People are not going to start signing up payments into their browsers without some kind of onboarding. An extension installation was the most trivial part of this process compared to actually explaining and convincing them to pay.