If everyone thought like you, then I might be forced to guarantee my business's survival by assuming the worst of every user - that instead of using a web browser, they're sucking down my content using a bespoke client that strips out all of the advertisements that I get my revenue from.

My response could be to stop using web protocols and force my users to consume my content using my own thick client.

That might be economical for me.

It would be if my site offered tomorrow's stock prices.

It wouldn't be if my site streams home renovation tips.

So if your assertion is correct, it would result in the decimation of large parts of the internet - which seems unlikely.

If your model is restricting how people view content, then yes, using an open platform like the web is not a great choice. Instead try delivering your content as a native app. There you can do a much better job of preventing them from interfering with how content is displayed. They might still be able to disassemble the binary and modify it, but that would be quite a lot more work and would need to specifically target your app; whereas browser ad blockers use features built into the browser that work globally.

Of course, by not using the web you are putting yourself at a disadvantage as far as customer acquisition, but if you think you can compensate for that, then go for it.